[Callers] Progression and "Going Out"

I'm a developing caller, pretty much self-trained (with occasional tips or short festival classes from more experienced folks). One thing that has been tricky for me has been always making the right call for the number of cycles to go out. For a typical dance progressing in the B2 I'm all set. Others require more thought. I'm wondering whether someone has developed a simple accurate mnemonic for the going out call, something like: "Progress in the B, say 1 or 3. Progress in the A, then even you say." (When there's a couple waiting out at the start of the B.) Googling has revealed nothing easily found... Thanks!