Hey guys, give the kid a break.

Hey Mike,
Definately go for an epoxy, you will destroy anything made of polyester in no time, rolled fins, heel dings and snapped noses, creases and crazing are all on the cards with the poly board.
You can encounter this in an epoxy too, but it takes much longer to damage them. They handle the abuse better. A standard surfboard is not designed to have the forces of kite wave riding applied to it.
Stick with the thruster, they just work! As for straps or unstrapped, matter of personal taste. I generally like unstrapped (if I can be bothered to take em off) for waves smaller than 4 foot. Anything larger or for winds over 25 knots, definately more fun (for me) in straps. You can't whack it hard enough strapless or get big airs off the lip with confident. A lot of people who ride strapless crash a lot and get pulled off their boards in the wave zone and just end up in everybodys way.
if you got the skills, get to it, if not, ride out of the way to practice strapless.
Hope this helps,