It looks to me like you need to commit to the harness more, sometimes there is not a lot of tension in your harness lines but maybe there was not enough wind? Try to move your hands closer together and lessen your grip on the boom. make your connection to the rig more from hanging from the harness and less from pulling with your arms.
Sorry to see you bend your boom. It seems to be on and off conditions which makes it hard but you might need to adjust your harness lines and take some more weight in it when possible. When you hook in it seems to pull the lines forward - so round the front you go. Are you able to take the weight of the sail in your harness (even weight from front and back hands) so your arms can let go of the boom altogether? This is how the sail should feel so your arms are just adjusting the angle not taking the weight.
Cheers
Marty
Hi PK, where is this ?. Looks like a nice spot.
To me, it looks like you were really over powered. What you do about it depends on your style. Many people here will give you different advice and this advice is also gear/style/personal attribute dependant.
A trick you can try when over powered is to use the under hand grip on the front hand. It's a bit more stronger and it allows you to get the sail under control. It applies a downwards force instead of an outwards force. If you feel the sail trying to catapult you, you pull the hand down (which you will naturally do in a pinch) and this will do two things: Stop's you going over the front, depowers the sail. The grip feels funny to start with, but will feel normal after half a session.
J
Thanks fellas,
It is a nice board I have learnt a lot with it.
The spot is Little Douglas near Farm Beach. Peter Ross was with me and had the same advice "commit to the lines a bit more".
Wind was 25-30+, Board 145lt Patrik FR, Sail 5.2 Severne S1 I think and me about 92kg with not a lot of skill.
So the line between ambitions and capabilities gets blurred at times.
Keep the advice coming.
I think you should move your harness lines forward a bit so that the power is on your back hand and also the boom looks a little high for you - lower it a bit for more control.
Cheers
pedro
usually i tell people to lengthen their harness lines
in this case - either shorter harness lines or raise the boom
raise the boom is an easier option 
then find the sweet spot on the boom for that sail (and wind conditions)
Stick with it PK, you've got a good set up and a nice sailing spot. One thing I spotted was that the mast base looks to be in the back half of the slot. With a small sail on that board in open ocean you want it somewhere in the front half of the slot. That will settle the board, keeping the nose down. As others have said, commit to the harness more, this will create mast foot pressure which will also settle the board.
Hi PK,
Great spot, used to go there a lot when living in Lincoln. Need high tide though. Dutton Bay is also good, can be sailed on high and low tide. I used to go to the left of the jetty, track before the first shack.
As others have said, move lines forward and shorten lines or move boom a bit higher. You should be able to hook in on land and let go with both hands and feel balanced. If rig goes forward move front connection forward. If falls backwards, move front connection back. Height of boom is personal. For strong winds I have a higher boom. For lighter winds have a lower boom (Chin Height ). As usual, there are lots of how to on Google.
guycribb.com/windsurfing_technique_holiday_DVD_0076v01.htm
Next time I come home ( Xmas ) should catch up for a sail.
Cheers.
Bugger, that link doesn't work, should have checked first. Anyway just search for Guy Cribb/harness lines 
Looks like a really sweet spot, like everyone else said, commit to harness lines. They don't look to far wrong position wise when your weights on them, from what was on your footage but you should be able to let go briefly and the rig stays put with just your weight supporting it.
It looks like you're at that hurtful stage of learning where you're hooking into the harness lines, but still learning to hook into the foot straps. When you're confident with finding the footstraps without looking, practice hooking the footstraps first (both front and rear), then the harness lines...it's far less risky than planing around hooked into the rig with the board bouncing around under you.
Stick with it, you'll get there
Select to expand quoteJacko51 said..
Hi PK,
Great spot, used to go there a lot when living in Lincoln. Need high tide though. Dutton Bay is also good, can be sailed on high and low tide. I used to go to the left of the jetty, track before the first shack.
As others have said, move lines forward and shorten lines or move boom a bit higher. You should be able to hook in on land and let go with both hands and feel balanced. If rig goes forward move front connection forward. If falls backwards, move front connection back. Height of boom is personal. For strong winds I have a higher boom. For lighter winds have a lower boom (Chin Height ). As usual, there are lots of how to on Google.
guycribb.com/windsurfing_technique_holiday_DVD_0076v01.htm
Next time I come home ( Xmas ) should catch up for a sail.
Cheers.
Cribby says low winds higher boom , stronger winds and overpowered lower so more weight on the board.Push your bum out to put more weight in your harness lines.
Keep it up pkenny.I agree you need to commit to the harness lines more.I have always gone with fingertip to elbow theory.Put your elbow on the centre of the mast clamp,where the tip of your fingers cross the boom is where the front of the harness line attaches,then just adjust the back line attachment until you find the sweet spot.You will know you have found it when you can play the piano on the boom.
Happy sailing
Your boom height, harness lines and harness hook height all have to be in sync. Your harness lines are fixed (unless you buy new ones), so is your harness hook height, so adjust your boom height try raising it an inch at a time and see what if feels like. Raising the boom will help you commit to your harness
You need to put more weight on your harness lines. Once you hook in and begin to get on plane, sit in your harness. this way the wind has to lift your up to catapult you, instead of just rotating you around the mast base, use your 92kgs to advantage.
You didn't gybe in the video. Is that normal? If it is, you must try and gybe at every transition. You won't learn unless you try.
Once you get going you look good, you've got most of the basics.
Enjoy the ride
Great video - I am feeling you there PK so many familiar moments lol. I am not quite at that level yet but working on it - have to learn to water start you make it look so easy.
Thanks for sharing PKenny - keep up the good work
Fun as
Cheers
Morgan
