What are those houses used for on egmont key?

Actually it is used as a housing for the pilot service the pilots are the lead boats that guide larger container ships in-and-out of the Tampa Bay area . that's aleast what I witnessed over a week on my boat staying right next to the dock

I say go to Montague Marine and ask Josh very good for guide if Island also on Island everything is posted if what they are once intended for.,if you ever get there it is a must see.

They are for the park grounds people who live on the island