Hey Vic, I was thinkin about your project and I was wonderin how your hull is gonna be supported when you pour the seacast??

Now that you have gutted the bulkheads and stringers, and removed the floor, the hull is able to bend and flex.
For instance, if your hull is sitting on a roller trailer, there is likely to be be an impression or bend where the rollers are contacting the hull.

Whatever shape the hull has assumed, that shape will become permanent once the seacast is set.

I would think the very best way to preserve the proper hull shape would be to remove the engine, and float the boat in calm water for your seacast pour.

What do you think??