The week after Christmas, I saw four kids (maybe 20 years old) on scooters, at the 30A intersection of Grayton. Each of the boys had a grin from ear to ear. They weren't sure about their skills at the stop sign, and decided to skip the stop sign part and jump on the Multi-use path, which as pointed out above, doesn't allow motorized vehicles. I watched them in my mirror as I drove towards WaterColor. Around Barago, they approaching oncoming bicyclers, and decided to cut across the grass and get back onto the road, without slowing down a bit. I'm not even sure if the anyone other than the guy in the lead, looked over their shoulders to see if traffic was coming.
I have no problem with scooters on 30A. I think they can serve a good purpose. However, I don't believe that 30A should be a training ground for beginners operating motorized cycles.