Had same issues in one of my "fast" cars once with an older Kenwood pullout that used the same idea as the Empeg to keep it in-place. For me it was just a matter of finding a way to make sure the handle didn't fly-back during acceleration. The hooks are enough as long as the handle doesn't move. Find a way to secure your Empeg's handle when it's in it's sled and I bet you'll solve the problem.