Wolfman, IIRC, your BOB/E&E is boat based with the intent of overland return home, right (midwest?)?

A tent probably is a good idea, but have you considered ditching the "tent" part and keeping the rain fly, poles and stakes instead? Throwing down a heat sheet or a garbage bag can keep you off the ground relatively well, assuming you can keep water from flowing through.

Given your intention though, I think a regular tent is prudent