MANY resort have docks. Almost all of the docks I saw went out past the sea grass to water deep enough to avoid it. It was no problem at all. Many of these same resorts sink artificial reefs just off the end of the docks, so you can snorkel and see all kinds of cool stuff. The sea grass does not wrap around your ankles. It's not really long enough to do that. The above posts are also correct about there being really cool stuff in the sea grass. I've heard many reports of sea horses! Although I wasn't lucky enough to see one. When the fisherman come in and clean their fish, in some areas, the sting rays come right up to the shore to take advantage of the discarded "stuff". YOu can sit on the dock and watch them. They're beautiful. All in all, the sea grass should pose no problem. There are ways to avoid it.
Debbie