Pubs, Falmouth? How long have you got?
Yeah, there are a few on the water, on the Fal and Helford.
Anywhere in Falmouth if you use a Pontoon, I'd go for the Waterfront or Chain (chutney

) Locker. The Smugglers (up Truro river) has it's own pontoon accessible at any state of tide.
St. Mawes is tidal, but well sheltered, I'd go for the St. Mawes Hotel over there.
Helford. The Ferryboat is great, but landing is awkward. There is a pontoon, but the guy that operates it, tows tied-up boats off and puts them on moorings which causes no end of rows.

On the Helford village side, there's The Shipwrights, tie up 'long side at high water or there's a deep water small pontoon and a 100yd walk all other times.
Give me a shout when you're down.