i'm about 90 kg but my boards are 100L and 99L so I can't uphaul either.

Up hauling is too tiring anyway just learn to waterstart.

Am 93kg. Am able to uphaul and tack my quatro FSW 85L. Uphauling on this board is tiring though, and a balancing act (sinking to knees), but it comes in super handy when I cant water start due to gusty or dying wind or when the water is spooky.

Just purchased a new waveboard at 93L so should be much easier.

I am 82kg and I can up haul my JP 92L with 7.6m sail on...
but only because I have been mastering uphouling in all conditions for many years, waves, storms etc
been retarded a bit in water starting...
Luckily I haven't been forced to use this hated line in last two years as my back will not stand the strain anymore...
I hope to forget both now (uphaul and water starts) since my gybes are getting better all the time.

I'm 100 kegs and can uphaul my 95(sink to my knees)if I need to, but why I would want to is beyond me. If the wind dies to the point where I can't waterstart I won't be sailing any where on my 95 even if I do uphaul. My 112 I can uphaul with the board sinking to my shins and my 120 I barely get my feet wet. Uphauling is way to much effort, if you have not sorted your waterstart spend a day on it and you'll crack it and won't need to worry about it any longer. I don't even have an uphaul rope on my boom for my wave sails as I've never used it, if the wind dies I just wait or start swimming, I've only ever been stuck once with no wind but you'll be in the same position if you break something, so learning to swim home with your kit in an efficient manner is not a bad thing.

See if you can try a board first. Board volumes tend to vary a lot from the stated volume, and if you try around the 110L volume it will be marginal.

At 120 to 130L you will be much better off as far as buoyancy goes, which is what you want in light/flukey winds.

110kgs, can easily uphaul a 6.5 on a 135. Have uphauled a 6.5 on my 109lt, but as mentioned above, had to concentrate on technique & was knee-deep before I got the sail up.

if i get stuck out deep, wavesailing and the wind goes i can usually uphaul my wave board, sinks to my harness but gets there

78kg and I'll uphaul my 72.. The trick is to ditch those silly ropes and grab the mast, slice it into the remaining wind like a waterstart, and staying low. A lot of times I crash the rig but I'm still standing on the board. So I uphaul all the time.