I'm not sure of the usefulness of a book anywhere like that - unless you have some control over which dive sites you might select to visit. On Bonaire, I can indeed pick my exact dive site, so a general description of the dive has some value, but since that's the case, such information is easily available.
About two years ago, a brilliant satellite map of Roatan was marked with dive site names. Great for the collector or someone with their own boat... What other application I couldn't say.
in the Red Sea, they have neat little per-punched log book pages for many of the wrecks complete with sketches. On Roatan, they have postcard size dive site sketches by "Liz", that make nice additions to your dive log.
Not only do properties (restaurants, guest houses, shops) come and go too frequently for a "book", but quality and consistency is a serious issue in any similar newly born concentration of economic growth.
The unasked part of the question here is easily answered. Roatan is a long, thin island that represents 50 miles of dive sites. Only the best and biggest dive ops have a service range of more than 5 miles in any direction... even then, they tend to stay localized and rarely venture further. Conditions on any given day vary dramatically depending on their base of operations with the additional part of the equation being the boats available.
If you wanted a basic "taste" of everything that Roatan might have to offer in terms of very distinct varieties of diving, you would need three weeks at a minimum. 1.5 weeks split between West & Northwest, 1 week on Central South, plus 2 days each on the Far East end of the North and South sides. When I envision this schedule, I am planning 4 dives a day for you
and always watching the North side weather during winter months. Oh, and you're going to need about $3000 for just the diving.
