Termites?

[Beaver]

Option 1: Put your boat in your garage and have your house tented.

Option 2: NUVAN Prostrips might work but I sort of doubt it. These gas off pesticide so you don’t want to leave them in the boat if your going to be using it.

Option 3: if you can find the effected area, drill a small hole into termite infestedt area and use Termidor Foam or D Foam to iinject into this area. Both of the products use expanding foam as a carrier which will pressurize the galleries and force the chemical a long way into their tunnel system.