Save yourself a headache and put your telephone number on it. That way if it escapes the rescuer will know who to call.
I still wonder if the owners of the one we rescued thought we stole it!
In the past MP has relied upon the owners to be reasonable in the placement of a swim platform. That was the deal years ago when I called inquiring about any regulations. If someone does put one in a questionable spot, I would suggest calling
Marine Patrol with your concerns. Enough complaints may get MPs to suggest a relocation of the platform to the owners.