We have stayed on Roatan and recently in Utila. We were 11 days in Utila, 3 of which where spent on Pidgeon Cay off the end of the island. There’s a fairly long list of things we didn’t get to do, I’d plan on 14 days min if you can do it, that is if you like to explore all that there is to offer. PS Paradise Divers offers amazing deals that makes diving/travel very affordable. Many dive shops in Utila include the accommodation if you are doing a 10 dive pack.