Build the hull, whack (or use builder's string) to unglue the hull from forms. No need to disconnect the forms from strongback to do this. A slight lateral movement of the forms will dislodge the glue. The build the deck. When deck is done, remove the hull to get at the forms to whack or use string again.

Or, much easier in my humble opinion, use spring clamps to hold the strips to the forms (you need holes or slots in the forms), and where needed, use blue painter's masking tape to puul the new strip toward the previous strip. I found that whether you use clamps or glue or even staples at the forms, the strips often need to be held together at points in between the forms. I used pieces of dowel rod the same diametier as my coves, put those pieces in the cove, then used tape over the dowel to pull the new strip toward its neighbor. I haven't done the hot glue method myself, but having used hot melt glue for other things, I can't imagine that it is any quicker or easier than the clamp+tape method. For tape, I think masking tape is much better than duct tape, it doesn't leave all that glue residue on the wood to gunk up your block plane and/or sandpaper.

Roger T.
Orr's Island, ME