Appreciate the water clean-up of polurethane based products but I'm getting on very well with zap Z-Poxy. It's epoxy resin, doesn't smell much if any -certainly doesn't always need multiple coats and sands very easy. A little goes a very long way also. I use a cheap brush or sponge and just throw away the brush after. I tend to use something like 50-80gsm material "rovings" though. I read lighter material was more difficult to deal with, or needed a second application as very easy to sand through. I think I used 24gsm material a few years ago which was a bit easier to form and I ended up 2 layers to give a decent coverage
I am not a big fan of "deluxe" materials these days though. They are suposed to be very good but most products I try from them seem to leave me somewhat wanting. And wanting same performance from one bottle to the next. Also, reading up on the various PU products, you potentially need to build up 3, 4,6....8 applications to end up with something "not as resilient" than perhaps an epoxy product needing 2 coats at best? Seems allot of work to me. The PU products in my experience are great for other works, but not for a hard wearing model hull so far.
Rich