Are superlight wind boards good for heavy sailers 120kg ?
bought a second hand formula board and it was horrible
Stuck to the water like glue and then when it let go was positively scary.
Straps way too far outboard.
After modifying more inboard straps was still horrible
It was like sailing a door , yeah the thing that separates inside to outside. And that's being kind.
I can in a way imagine such a beast for a 80 kg rider planing in 10 kts in flatfish water , but it's not going to happen for me
So ......
Is a jp superlight kind of thing going to work for me ?
Or do I stay with my old starboard go 155 for my best light wind option ?

Your best bet is a big Freeride board...I have on order a 185L F2 Ride to go with my Vegas Twin 156L, and 146L and 136L The have the option of out board or inset foot staraps and seem to work for me at 135kg. I think it is going to be great in light wind for me with a big sail.

Jp slw definitely works. Formula boards are made to sail upwind and downwind. Formula boards dont really reach properly. My jp slw is awesome. With a 9.7 reflex i plane as early as anyone and can hang on to the point where i can change onto a fully powered 7.8 on a 111 freerace. Last season i was over 105kg (some mihht say that was optimistic). The slw is noticably floaty for me and glides over the water even in no wind where as my mistral sl137 bogs down. Not sure how an extra 15kg would go. The stock 56cm fin is a perfect match. I have my straps right out. Once you learn to sail like that you will never look back, super comfy and the board flies. i havent got gps speeds on it but it feels super fast, i seriously enjoy myself when i bear away fully powered.

The SLW boards all seem to have straps out very wide and like plenty of power, so if that doesn't suit your weight and style then I'd give them a miss. As IMAX says, try a big freeride beginner board like the larger GO, small Rio, large Funster. They'll not have the same performance as a SLW board but you might find them easier to use and some will have a centreboard which will work well upwind in light conditions. They'll also be tough as nails.

I have a 2012 SLW JP for $1000 for sale - see buy & sell