Adeline started out with "sausage" fenders and then I went to the round style size A-2.
I finally upgraded to the largest round fenders that West Marine carried, way back when.
Norfloat A-3.
These big globules just BARELY fit through the sliding window.
One hangs from the forward cleat and the other attaches to a "Fish-On" rod holder mount that I installed midway back on the cockpit gunwale.
Best money spent, by far.
I boat alone quite a bit so there's no-one to assist in a difficult docking situation.
If I need to dock upwind I can safely carry a bit more speed to ensure that I land at the dock parallel.
If I'm docking downwind sometimes the wind will unexpectedly pick up and carry me into the dock faster than expected.
Either way, those big, fat, squishy fenders absorb all that energy...and not my gelcoat.
When I think of all the effort and expense to keep Adeline looking good a few bucks spent on top-flight fenders seems like cheap insurance.
And really, that's what they are.
Big, soft, "catcher's mitts" that bring me safely home even when I screw up a landing.