Allen,
I assume you have read through the posts by Ocroft. You might try a similar tactic when considering new AIM possibilities -- simply take that issue back in time, two or three years, and start the "pretend" AIM program then. This will inform you as to what advice AIM is presently giving for that Stock/ETF and you can then decide to begin a program or to wait based on that current AIM advice.
You could even proportion the Stock/Cash percentages to that current AIM advice, and almost run the "new" program as an extension of the "pretend" AIM. If it is "nearing a top", but not quite there, you might even get a few more Sells before the "actual" top. But you would be giving AIM a "fighting chance" if next month proves to be the top -- and we simply don't know.
Regards,
Bob