What CaribbeanGirl said. If you don't actually need a marina, Trellis is an ideal place to stop for crew drop off and minor provisions. Good protected bay for anchoring or mooring. Shops, restaurants, bars a plenty. Easy short dinghy to dock and 5-minute walk to airport terminal. No taxi required. Other nearby options are Marina Cay (which features great access to Diamond Reef snorkeling). Scrub is the closest actual marina....they have a quick ferry service from there to the Trellis Bay dock.