We rode the on again off again trolly, the trolly was not air conditioned but it was very open an breezy, the drivers gave a very nice tour over the PA system as they drove and there were lots of places to get off. We felt like we got to see all there was to see in Key West in one day. If you have not been to Key West before this is a great way to see it all and do it at your own pace.
On the two person mini boat you are joined by a tour guide. This activity is not done as a group with lots of people in boats but with one tour guide for each boat. Afterwards we climbed Dunne River Falls and had a blast. Its not an easy climb but something that you should not miss. The one drawback was everyone constantly trying to sell you things all around the falls.