Rostan is a long thin island. This geographic spread dictates that dive ops are going to take you to specific dive sites that are local to them. Anthony Key (West/North) will take you around the South for a dive at Mary's Place. A fun dive.
Most any dive op will get you to the Cara a Cara Shark Rodeo, which although is a South side dive, it is not representative of the Southern reef system.
CoCoView (South shore, central) will do this also, and offering a "day trip" to the environs of the West. Return visitors mostly only do this once.
CCV offers a world class dive op, as does AKR, the difference being the South's near-shore reef structure and shallow dive profiles. It is quite common for snorkel-only groups to spend a week at CCV and largely just do the well regarded resort shore dive. Because of the shallow vertical and Sunny walls, it is macro heaven for the professional magazine photographers who do Roatan.
November would be #12 in my choice of months for anywhere in the Caribbean, but Roatan might be your best shot at avoiding the effects of the Tropical Storm season. Storm wind and wave come down from the North, another reason to hedge your bets on the South side.
The grammatical usage of "upscale" combined with "dive resort" is what I see as an oxymoron. Over many years of travel, I have seen maybe three in that category, and these are not in the Mar Caribe, certainly not in the Bay Islands.
