Couldn't agree more. Furthermore, if you're "constant changing of direction" etc. involves aerobatics, why not squawk 7004. Then at least every radar controller around will KNOW what you're doing and provide appropriate separation/traffic info to those who do choose to use a service.
Makes everyone's life easier, including yours. Better than just being called as another primary only contact that I suspect many will just chuck out another "roger" for and carry on along their merry way in your vicinity...
