Silicone...
I understand totally about your feelings towards Silicone..but, if you have PLASTIC ports on your boat you sure DO NOT want to put them in with SiloFlex or 5200...unless you never want to get them out again.I have Beckson ports..made of Plastic..and have had good results with sealing them with Silicone..after running a wire brush in a dremel tool over the mounting area.If I had Stainless/Bronze or some-such metal ports,I'd gladly use something like the SilkoFlex....I HATE REBEDDING PORTS AND DECK HARDWARE.So,trust me,I work very hard to do the job right the first time.Going back to this guys question,which was;"whats an EASILY removed bedding substance"...IN MY EXPERIENCE it is Silicone coming off much easier than 5200.Note that I did recomend he not use that for deck hardware UNLESS it was something he'd feel the need to remove on a regular basis..which I dont know what that'd be.But,as with most all else..we all have our opinionns..go with whatever works best for you. Fair Winds Brother>>>David