Here is how I mounted the tripod/camera. My nuts is a bit wrinkled due to a nasty interferrence crash this spring.
I mounted the pencamx tripod onto a wedge shaped piece of foam with packing tape. I then wedged (to use that word again) it into the plane and secured it with velcro and bamboo which is also used to secure the cover with rubberbands. The pencam's trigger servo is mounted on the camera via a balsa shim, two sided carpet tape and strapping tape. It's on there really good.
I also fly the biggie with a 14.8oz Olympus camera (wife does not like that) but it makes for great pics!