Walter Alter wrote:
Any opinions on what the best mattress foam is? Everything I've tried so
far flattens in a couple of months.


A bit off-topic, but we got an air mattress, the predecessor to the
"sleep number" mattress that's advertised now. It helps that our cat
takes a standard size mattress, but they can be adapted to many bunks.

We each have our own firmness setting, and the result is almost as
comfortable as our waterbed at home. The pump is actually buried in a
locker in the main cabin, and is only needed about once a season.