It is easy to understand building the hull.
Please show what is necessary when you are doing the deck.

I agree with what the others have said. Here are some photos to illustrate the way I did it:

The hull, with forms still inside, has been lifted from the strongback. After this step the bases that had held the forms get removed from the strongback.

Then the hull gets inverted (actually turned right side up), and supported as Jay suggested. In my case I made plywood supports that mimicked the shape of forms 6 and 11. After tracing those forms to the plywood I scribed a line 1" outside of the form profile. That is to account for the thickness of the hull plus the thickness of carpeting I used to line the supports. The carpet is to protect the soft cedar of the hull. My supports, or cradles, straddle the strongback box beam and fit into tracks I mounted on each side of the SB to support the cradles.

I put a strip of masking tape (kind of visible as a horizontal green line at the right side of the photo) all around the sheer of the hull. This is to prevent accidentally gluing the deck to the hull as the deck is stripped.

Sorry for the neatness, Ken. I think you may have hit upon the reason it is taking me so long to complete this job ;^]