Sorry for late reply, just saw notification now. Thanks for your informed, balanced, and opened minded response! And, yes, there are several factors in the Kingdom that have led to a not so favorable opinion of the sport. Fly by night rental outfits renting skis to inexperienced (often high) people in densely populated beach areas is high on that list. I primarily go to wild beaches on uninhabited islands and also try to be as unobtrusive as possible when near landlocked people (amongst the otherwalrusses). It is a sad state of affairs that this light boaters paradise does not support a larger active following, I think largely due to being cost prohibitive for most Thais. The large reservoir behind Srinagarindra Dam is the premium large body of fresh water open to recreational light boaters that I know of, and I'm planning to visit there soon. Yes, many of the coastal rivers I explore have a lot of floating debris, imperative to carry a declogging device. According to a friend of mine, Kaeng Krachan Lake up until a couple of years ago, allowed PWC's. This the largest body of fresh water in Thailand and 40 minutes from my home, instead of allowing PWC use on the unpopulated portions of the lake, all use is now prohibited. This is the kind of thing that can happen without a larger and organized political action group. Registering the trailer is a can of worms that I'm still exploring, seems kind of optional and it may be cheaper just to pay the small fine that may never happen. Liability issues while towing and car insurance are the concern here.