Play action out of the Gun?

We are 2 back 3 wide and 1 back 4 wide most of the time. We run shotgun zone read, counter and lead. We have a good running QB that throws on the move well, but has trouble when he is asked to sit in the pocket and read. We have used the simple naked and boots with the flood routes, but we are looking to expand on our play action passing game. Any suggestions?