Brian,
I think in many ways, it's counter-productive to have 3 separate boards....

1..limited time to spread ourselves 3 deep
2...there's categorizing...that HH alluded to
3..I think (on rare occasion) that..it's even thought of as intrusion...when folks from board 3 help out on the other boards

It worked well with one board...for a long time...I think if we all make a more concentrated effort..to watch out for new folks..and zero's....it will work.

Best...
Kaley