Well the first thing I would tell you is you are probably over bowed. Then I would take a look at how your arrow is nocked on the string. Are you using a string loop or a cushion under the arrow with the release attached directly to the string. You may be getting nock pinch causing the arrow to move around while you draw.

If you are shooting more than 60 lbs I would consider dropping your draw weight to see if that helps you draw more smoothly.

Yes you could get a WB, they work great for spot and stalk hunting. And there are some fine drop a ways on the market. I like the Muzzy and the drop zone myself. Functionally there is nothing wrong with the WB, I just don't like setting them up and adjusting them is all. Then again the NAP 2000 isn't my favorite rest to work with either. I prefer the 3,000 with the extra adjustments.

It will probably cost you money either way, if you drop your draw weight you may need different arrows. Maybe not though.

You could also mess with how the prongs cradle your arrow. You might be able to make them a bit more stable. Some have set ups where the arrow sits pretty precariously on the prongs. You should be able to set it up so you can jiggle the bow some and still have the arrow stay on the prongs. When I use prongs my arrow won't come off unless I bump the arrow on something while moving my bow around.

Things to ponder anyway.

Paul