Hi everyone,
I lurk here alot but don't really post much but i'm asking this on behalf of my Dad (110kgs dry and 6'6 tall) , who is looking to purchase a GO board to replace the longboard i may or may not have crashed into a sand bar in 25 knots and destroyed the centreboard case on. 
He thinks that he requires a 155 or 170ish litre board to be able to uphaul, but I think he would get away with a 144 litre board. He is in the harness and knows all the basics. We know that he sinks my Bombora 295 (does anyone know how many litres these boards are by the way) Which size board do you guys and girls think he should get?
Thanks in advance, Sailingkid
i am 100 kilos 6'1" and on my first shortboard
i chose a 160 liter / 79 cm wide board
now realizing that yes, could have gone down to 145 liters
do i regret the volume i chose - NON
reasons: can handle very large sails which is great for low winds {10.0 sail}
great flotation - no issue schlogging
have used it with 6.0 sails in hi winds {not ideal, but fine}
so, if lo or no wind occur often i suggest the bigger board
if winds over 15 knots consistently {or only go in those winds} suggest 145 liter
i am now considering board around 135 for the bigger winds 6.0, 7.0 and 8.5 sails
this should still float and be able to uphaul - a little more carefully though
good luck n good winds
q: old board is beyond repair ??
I am 106kg at the moment. (Luckily for me the board doesn't know I am only 5'8"!)
Despite my weight, my 135L board copes well in managing to keep itself and me above water. Uphauling is no problem.
If you assume that another 4kgs accounts for another 4 litres of flotation, then I think a 140 litre board or bigger will be fine. I think the 135L would work too.
Of course, a larger board makes it easier in lighter wind. I prefer the 135L board, but if the wind is light the bigger formula board I use can handle bigger sails and fins and therefore planes earlier.
Do the local shops allow you to try before you buy, or even just rent one of each type? That would be a great way to choose. If money is not a big deal, buy both and use them for different wind ranges!
I'm around 100kg. Add the wet suit, harness, water in the suit...105kg.
I have a 160L which is sligtly too much for me but it works well regardless.
I also have a 292 Bombora. I tracked down the volume to be 134L.
The board itself is 15 kg and just sinks under me. Another 5L and it would be fine.
Given modern boards would be around 10kg the equivalent modern board "sinker" would be 130L so a modern 135L would float unde rme. Add your 10kg and I woud say 144L is just safe to buy.
