i have the same exact problem so i can't give advice from experience but i do know some pros and buddies that are jib rats. what everyone agrees on is get get shifties in that direction on lock. if you ride regular, punch through your left armpit with your right hand. strap on your board at home and practice to get the muscle memory.
this is the best "how to" vid i've ever seen. https://www.youtube.com/watch?v=sGSdL_fpqTw
let me know how it goes and what works for you. i can use the help too.