I have managed on average to leave the dock roughly 12 times a year
At my particular marina, that puts me in second place only to a small converted life boat the owner goes fishing in.
On the other hand, I live on my boat. . .so depending on the meaning "use", I'm using my boat 24/7/365 (which is one reason I moved on)
Most of the boats here are derelicts. Slips get paid, I rarely ever see anyone down here though. Couple a live aboards. . .one old guy working on his fishing boat. . .my slip neighbor comes down when it's nice and hangs out, boat never leaves the slip.
I did see one boat leave after 5 years of watching it sit. There is a Catalina 350 or 381 on the other dock. . .never seen an owner, never seen it move, never saw a light on. Last 4th o july, gone for e the day. Next morning, tied up like it never left
It looks now like the frame has been removed and the canvas, but now has had a brow tarp on it for a couple weeks.
Most of the marinas out here in Little Creek are full of boats that go no where. I'd say 90% of boat traffic is small fishing boats from back up in the creek. . .