Agreed. All a run up is good for is to get momentum to turn your body into the shot, the only thing that it is good for on forehand is to screw your shot up. I'm sure with a run up I could get minute distance increase mabye 10-20 feet, but accuracy is gona sufer esp with a forehand turnover.
When a disc wobbles out of the gun, it means 2 things, grip & snap.
If you are consistently wobbling your disc, go back to the basics.
Stand in a stationary position, don't move.
Hold the disc in your hand with whichever grip you choose and try to throw a smooth line.
Do a quick snap, no run up, all wrist and a little pull back.
Concentrate on "smooth technique."
Everyone has thrown a baseball here, do a flip like throwing a 'sidearm to second base.'
if you slide the disc all the way down into your "Lobster Claw", between the fore finger and the thumb, take your walk up out completely and just throw from standstill, you'll likely see that issue disappear. it worked for me. i throw a 150 class flick and a predator sidearm. i'm mostly RHBH though.