Early this year, Marin County imposed new regulations on rentals in coastal communities and capped their numbers by town, an effort meant to ease the impacts on workforce housing. Prospective owners of short-term rentals in West Marin can now put their name on a waitlist for new licenses that will open on Dec. 2. A lottery will determine the ranking of all applications submitted in the first 30 days after the waitlist opens; after that,…