Just make sure you get the right stainless!!
You need marine grade (obviously) 316 stainless or better, and I believe that when you order screws bolts etc, you should specifiy at least A4 bolts (i.e. 316) rather than A2 - which I beleive is 304 stainless, and will rust in salt water.
I want to do something similar with my rear double pod seats so that I can free up some deck space - but haven't seen anything that I think would stand up to the abuse yet.
D...
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