TOPIC: Stayin' afloat

Hi All, Before I realized that Crosby Boats embedded their wiring directly in the underside of the deck, I removed a pretty large blob of what looked like spray foam floatation from underneath the forward deck in order to access the bowlight, horn, hardware, blah blah blah. The foam appeared to have been sprayed on in place when the deck and hull were still apart and the deck was flipped over. I don't have the provisions to easily flip my boat so as to be able to Spray any replacement floatation back in there so I was wondering what type of pre-fabbed or pre-molded floatation blocks are available that I can simply strap to the underside of the deck. Thanks in advance.
Shipster

pool noodles

That blue insulation foam at home depot/ loses works well, you can cut it to whatever size you need

Last year Walmart sold their leftover pool noodles for 25 cents a piece. I bought an arm full. They will be clearing that stuff out again soon.