The ONLY yacht that REALLY scared the SH$# out of me in a relatively calm sea 2-4' off the stern 1/4 was a Marlow. We were at 16 knot cruise and...
Poseidon marine blinds in Fort Lauderdale has always been fairly priced and they did a great install on a few yachts I manage.
Blue silicone will most likely collapse with those bends. I'd stick to wire bound marine wet exhaust hose.
