14 days there last June, took floaties out into the sea for a cool off on four different days, never had a problem. Only access, unless you are adventurous, is via the jetty and small steps, both on the mainland (sheltered) side of the Island.
Took my own snorkeling gear and circled the Island, again no problem. Enjoyed the swim and was not bothered by the semi rough seaward side of the Island.
One thing I have not seen anyone mention is the only sandy bottom area is next to the jetty, very small and no more than waist deep. I did catch my knees on the rocks a few times but as you are only gently lounging about; it was not a problem but would suggest you wear footwear as a precaution.
TI is a wonderful place and you will soon find yourself enjoying the company of like minded people wondering what all the fuss is about.
Now you have three choices for the Island;
Naked, snorkel and flippers.
Au Natural and sandals.
Hope this helps?
"Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind."