I'd be afraid they would rot eventually. Maybe cinch them up with straps, and the add stainless bands and remove the ratchet straps? Dunno. My kids just asked me to put a dock in at the farm, and I think I'm going to just layer polystyrene in the joist cavities of a deck.
This thread made me bolt upright... (I had to pitch that in there...) Anyway, Junior's proud papa is seen here: And still.... some idtio somewhere would still manage to crossthread it.