Hi Steve and J,
I am also AIMing BTB. Nevertheless I am also interested in improving on it, and like to play around with the 'knobs'.
The reason for me asking was that it occurred to me that I was doing thing the wrong way around. Maybe I should pick a "range" first, and then calculate the required parameters. Especially so for small accounts. Picking the parameters without regard for the range could cause one to end up with unexpectedly large zones of no-activity. (i.e. 40 or even 50%, again, especially for small accounts)
Best,
Rien.