With the plywood precut it went quite quickly. We were able to cover the whole surface. Which left one unintended consequence which was that we ran a little bit short on weights. So anything heavy in the garage ended up holding down the plywood. The thin plywood is not exactly flat and it bows quite a bit requiring weights at close to 6 to 8 inches separation when it's biased upward. Here's a picture of the result.
The other upgrade to note is that I picked up a furniture dolly which made the movement of the hull much easier.
We moved it in the middle to keep the epoxy cool while we spread it. But the garage floor is not flat enough for adding the weights. (When the hovercraft hull is flat on the concrete. One corner by the door is almost 1.5" in the air. So we moved it outside to use the flat driveway concrete once we had already spread the epoxy and placed the plywood.
