[quote=leeboweffect][quote=MN3](imho) Foam in a mast is a poor idea - it WILL get wet and heavier with time (condensation)
When my 6.0 was rebuilt in 2011, the head was removed and all the foam was toast and a huge PITA to get out
Some people tap a small screw into the bottom section that can be unscrewed in the event of a capsize/turtle to release the water[/quote]
Doing some research I found that all the consumer pourable expanding polyurethane foams ("Great Stuff" one part pressurized can and two part flotation from West Marine) do in fact absorb water over time. Thanks for that input and that option is off the list.
This is how Hobie does it with a plug and it works very well as the foam is closed cell and does not absorb water. I don't know what the polymer is. Having installed a few of them it looks and feels like the same foam pool noodles are made of. Unfortunately the plug is not an option here.
[url]https://www.murrays.com/product/50-60060000/[/url][/quote]
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