I was going to sheet mine, like I did on a 4*60 I built. I just finished covering the turtle deck lastnight and I'm glad I didn't.
I actually like the look. Sheeting it is no big deal. The back piece of the removeable canopy is slightly higher than the front of the turtle deck. Build, sheet, sand and then install the canopy to sand. As it sits now my "glass" is above the covering! You will want to build as normal, then glue sheeting to stringers, you have to sand (shape) the stringers anyway.
It's all good!