In case anyone's interested in the Table I referred to in post 7, here's the [link=http://www.rcuniverse.com/forum/m_6155743/anchors_6155743/mpage_1/key_Melamine/anchor/tm.htm#6155743]link[/link].

I built the one that Minnflyer drew out and it is solid as a rock. Picked up a slightly damaged hollow core door at Menards for $7 - there was a small hole on one side - perfect for our use.

-MA