I have been trying to find a very small one to rent to go fly fishing, but doesn't seem to be any who rents out small boats.
The only one I can find is this one
http://www.arubadaycruise.com/ and it is not especially small (and is actually for sale).
He charges $150 and hour for max 5 people including:
A professional captain
•Soft drinks, beer and water
•Sightseeing •Snorkelling, snorkel equipment and life vests for each passanger (including one for a baby)
•Waterskiing ($50,- additional)
•Tube riding ($50,- additional)
If anyone knows of smaller boats for rent, please post 