When My wife and I was cruising full time, we spent several months on a mooring ball at Boot Key Harbor in Marathon.* Which is a wonderful place to spend your time.* Our sailboat draft 5 1/2' and we had no issues going in and out.* The mooring ball rental includes a weekly visit from the
pump out
boat.* The city marina, dingy
dock, and public park are in close proximity.* The city marina was selling
water for 5 cents a gallon when we were there and has many amenities for cruisers such as a library, TV viewing areas,
WiFi, etc.* There is also restaurants, Home Depot, CVS, and a publix grocery store within walking distance.*** We spent several weeks cruising in the area between Marathon and Key West.* If you watch the charts, the tide, and the
weather it's a wonderful experience.* Fair winds and good luck.