Just had a go on the ubersmooth and was pleasantly surprised with how much float the tiny board has! I'm 95kgs and it floated me just fine.
The conditions were crap, strong cross offshore and very small with no power. I have read all of the reviews for the smaller boards and used this to aid me catching my first few ripples...worked a treat wow what a fun little board it is!
I'm not sure but the deckpad may have been changed since the uberfish as it felt as if it had more grip?. The board is very light compared to every other board i've used and although it doesn't feel as bomb proof as the sub vectors (c4) I think its construction is fine after my one outing in small conditions. Anyway thumbs up from me