On returning to one of my favourite swimming spots I saw they have added a hoist/chair. Which makes it about the most accessible really wild swim I have seen. Filled with crystal clear water from the Floridian aquifer there is lots to see in the water - underwater plants, assorted fish. I was there in February 2018 and the hoist was wrapped up. I got in touch with the parks service and they said (April 2018) When the lift was put in kids were using it to jump into the spring and park management was worried about injuries occurring if kids landed on nearby rocks. To prevent injuries the park manager put up a fence and his mobile number and the Assistant Park manager's mobile number. If someone needs to use the chair they can ring those numbers and someone will come down and install the battery and show them how to use the chair. If you want to check details in advance here is the park info https://www.floridastateparks.org/park/Ichetucknee-Springs including their number. You can also make an 'Accommodation request' which is not re somewhere to stay but a means of making requests for accommodations in order to participate in activities in a state park https://www.floridastateparks.org/content/accommodation-request
Ichetucknee Springs state park gets very busy in the summer season (May-September) and in order to protect the springs there are daily capacity limits. So being there when the park opens and getting in touch in advance if you need to use the chair or request other accommodations is a good plan.