I don't know of anyone that rents motor boats to tourist, the waters are a little tricky with coral heads and shallows so that it wouldn't be profitable considering the possible/likely damage to the props and lower units if you weren't familiar with the local terrain.
However lots of places rent sunfish and Kayaks that can be taken to the reef independently to snorkel.


White Sands Dive Shop
https://whitesandsdiveshop.com/