Re: Is the foam needed????
The foam is there to ensure that your boat doesn't hit the bottom of the lake. It doesn't protect the boat from filling up with water, just so that you will have something to hang onto and later to pull out and salvage.
Your choice, the foam don't weigh much unless it's waterlogged. Then it might need to be pulled out and replaced; by then you might be ready for stringers as well.......