I've had my layout for years, but it's always been more of a whip than a layout. My set in my tuck is really good, but it's not nearly as good in my layouts. I try to set and I don't really know how to stop arching my back. Despite having such terrible layouts I started doing fulls. I have a full now but it's tucked, and I'm assuming it's because I set so much better in my tucks than my layouts. Now I can't fix my full or start working on doubles until I fix my technique in my layout. Are there any good drills I can do that will help me with my layouts (and fulls/doubles)?