I had a marine
repair business in Port
Washington, had more work than I could handle.
Capri charged 20% on top of my bills, which I labelled as "Capri Tax"

Manhasset bay marina charged 10% which I absorbed. Manhasset Bay Marina was excellent to deal with.
I was mobile, had a work boat in the bay and did most of my work in the
mooring fields which no one can control but the owners.
I also worked in the yards, that all depends on the
current management.
I detested
varnish work and knocked back a lot of requests to do it and there was no one there to reliably fill that market.
That may have changed , but I doubt it.
I did not spend a cent on advertising, did not drop a
single card on a
single boat.
I did however have an excellent work ethic, turned up, on time, charged an hour for an hours work (unheard of in the marine industry..FACT!) and would not do anything on a customers boat I would not do on my own.
But the smartest thing I did was take my day off on Wednesday. I was the only guy available in 15 minutes to be anywhere in Manhasset bay to start a customers boat on Sunday morning when they found they couldn't go out on one of the five days in the whole summer......unless I was available....which I always was.
Too easy.

Save 5 guys sailing day is all the advertisement I needed.
This last tactic will likely not apply to a wood finisher though