Justin is chucking around the Hobie Colin Mcphillips 8'11".
I don't know the exact weight but it does fall into the pretty light to light range.

Weight can be manipulated a little with what you use as a deck grip. A wet full deckgrip is heavier than a wet half deckgrip which is heavier than a smattering of wax.
I ride a hobie CM 8'11" most of the time and I prefer the same deck grip as the one Justin is using.It is also a hobie product.
I am heaps different build than Justin(me 85kegs and 48yrs old Justin is a spritely 75kegs and a mere boy)but I can get this board to take me any where I need to go on a wave.(abilty allowing

), and I am still improving my surfing if that's any indicator.
The 8'11 is 122litres
The 8'4" is 112litres
The 7'11 is 104 ltres
I would really love to see Justin on one of these babies. He has got a
bottom turn top turn combo that is great to watch.
Jason