Select to expand quoteLeeD said..
To keep a waist harness from riding up, just lower your booms.
When hooked in, if your booms are REALLY low, your waist harness will be forced to slide DOWN on your body.
Do a compromise and have the harness lines perpendicular to your body when hooked in, and the harness will stay IN PLACE.
True,however sometimes you need the boom high for light winds/earlier planning and leverage,what ever is the most comfortable I reckon(as per Brett Morris comment)
Like all harnesses(and most things windsurfing) it is trial & error till you find one that fits perfectly and is comfortable for your style.
Select to expand quoteMr Milk said..
I've never had my nuts squashed wearing a waist harness
Don't have that problem.. 
If your waist harness is riding up then you need to buy a better one. My three year old NP now sits in the cupboard because it is obselete. It would ride up all the time, regardless of where I positioned it or how tight I made it around my waist. Even worse, when it slid upwards it forced by buoyancy vest to do likewise, nearly choking me! I no longer have those problems because I have updated my gear.
Low booms with a waist harness forces the harness to slide DOWN.
Perfect setting is 90 degrees, or perpendicular to your body when hooked in, hiked out, powered up.
Too high booms force the waist harness to slide up.
Select to expand quoteLeeD said..
Low booms with a waist harness forces the harness to slide DOWN.
Perfect setting is 90 degrees, or perpendicular to your body when hooked in, hiked out, powered up.
Too high booms force the waist harness to slide up.
Sorry but I disagree Lee. As I said in the previous post, the newer and better waist harnesses do not slide up. Try and see! I am not sure about your perfect setting either. A slightly higher boom is great in lighter conditions and you can create more downforce. These are not my ideas, but I have tested them and they work. There are some very good windsurfing coaches online and they are worth a read.
Select to expand quoteLeeD said..
Low booms with a waist harness forces the harness to slide DOWN.
Perfect setting is 90 degrees, or perpendicular to your body when hooked in, hiked out, powered up.
Too high booms force the waist harness to slide up.
New school windsurfing: the boom is high and the harness lines are long and almost vertical (high boom), arms bent - everything to put the pressure down through the mast foot. Horizontal lines increase the chance of accidental unhooking.
Select to expand quoteMrCranky said...LeeD said..
Low booms with a waist harness forces the harness to slide DOWN.
Perfect setting is 90 degrees, or perpendicular to your body when hooked in, hiked out, powered up.
Too high booms force the waist harness to slide up.
New school windsurfing: the boom is high and the harness lines are long and almost vertical (high boom), arms bent - everything to put the pressure down through the mast foot. Horizontal lines increase the chance of accidental unhooking.
Spot on,long lines & boom high
^ From an earlier thread; www.seabreeze.com.au/forums/Windsurfing/General/54-Knots-And-check-out-those-short-harness-lines/
Hans Kreisel does very well with low booms and short lines. I don't really understand what's going on.
I had thought that high booms and long lines puts a lot more of your weight through the mast foot rather than your feet, so I would expect his mast foot and foot straps would be further forward. It shouldn't make any difference to sheeting and ballast though.
I find longer lines and a high boom is more comfortable. I can hold my head more or less still while the board bobs around like crazy.
he's gonna be in trouble when he wants to sail back, he forgot the lines on the other side.
Who sails "new school" or old school?
We just go windsurfing.
Lots of freestyler's use high booms and LONG harness lines, to get that 90 degree off the body line thing.
Lots of speed sailors use short lines and low booms, but their harness lines are still around 90 degrees off the body.
I"m not advocating high or low booms, I'm just saying that keeping the harness lines around 90 degrees off your torso keeps the harness from sliding up OR down.
Lots of wavesailors use low booms and long lines.
It's all personal preference, but if the problem is waist harness riding up your torso, then lower your booms, or raise your harness.
Select to expand quoteLeeD said..
Who sails "new school" or old school?
We just go windsurfing.
Lots of freestyler's use high booms and LONG harness lines, to get that 90 degree off the body line thing.
Lots of speed sailors use short lines and low booms, but their harness lines are still around 90 degrees off the body.
I"m not advocating high or low booms, I'm just saying that keeping the harness lines around 90 degrees off your torso keeps the harness from sliding up OR down.
Lots of wavesailors use low booms and long lines.
It's all personal preference, but if the problem is waist harness riding up your torso, then lower your booms, or raise your harness.
If it's all personal preference as you say why are you giving opinions like you are the expert?
He has the future generation boom, where the harness lines retract inside the boom when not in use. They call em, automatic spring loaded harness lines
