TDV, I know enough to never provide fodder for those that feed off others. Yet your antagonistic virtuoso's beg for condemnation. Feed on this! Training aids are used in or on practice arenas. It has nothing to do with live actions. It's a honing method to create eye-hand coordination. There is no second or next target, only one. Training devices are not allowed on live tables. Pull your head out of wherever you have it residing. I believe I read where you play golf or whatever. There are all kinds of training aids for that. I know you will find fault with this post as you do all posts. So what I have to say before you do is like I told Dave. You're like a bird. All your capable of is to EAT, SQUAWK AND CRAP!! Warning, were I you I would not eat anything out of a farmers field for they use poisons to get rid of pests. Hmm, on the other hand. "BON APPETIT"!!