Trellis is actually an enjoyable anchorage IMHO. There are many fun things to see and do, with numerous eating options and trellis bay market. Rite Way and others will deliver to you at the dock if you have greater needs. There is also a reliable ATM at the airport only a few hundred feet away if you need to top up on cash. If you are a religious man, Mary by the Sea has Saturday and Sunday service via taxi.
I have not done the dingy ride across, and honestly I wouldn't. You can always stop mid day and accomplish your chores in trellis, then motor over to Marina Cay/Scrub. It only takes about 20 min. You will be snorkeling diamond reef by 2pm.
