The thread goes full circle back to where I think if more intelligent size and speed limits were in place, PFers could coexist with other park users with much less risk involved. Ever seen a 12 oz Formosa with a brushless put on a "anti gravity" show? What more could you ask for? There is a whole world of planes and power choices from ultra floater, 3Der, semi scale, etc. that can be flown with much less potential for harm than the ".15 size" planes that are the current limit.
Let the 100# lady with the doberman worry about her own responsibilities.