Kiwi bob said...
>>>>I have brought a mistral with about 105 litres volume and 273 in length.The first time out was a challange to say the least.I found uphauling the board a real challange <<<<<<<
Well that's going to be a sinker for you as the rig is going to weigh more than 6kg.
Also sounds like it's an older style board, 273 is a bit long for that volume these days.
Modern boards are wider, this means for a given volume they have more stability, and can carry a bigger fin, so also a bigger sail.
I'm far from an expert on what you're after, but I'd think 115 to 120 litre but more than 60 wide.