hello,I'm also using a .40 size trainer as my Ap platform now instead of my glider..i converted it to elec. with a large Axi motor which helps with vibrations a lot!Also my camera is mounted inside my plane in the cockpit right under the CG.its a lot safer then having it hang out of the plane on some sticks...well click this link to see my plane and setup...enjoy..
http://www.rcgroups.com/forums/showthread.php?t=378211