Need a camera tree arm. Ideas?
 

My wife is a professional photographer (weddings, senior pics, newborns, etc) and we just purchased a Canon 7D to back up her Mark II. I am going to be using the 7D for filming hunting videos. I need a quality tree arm that I can trust to hold a $1700 camera and a $1200 lens. Since i am doing the hunting videos for fun, I can't spend a ton of money on a tree arm. The $30 one I used for my camcorder obviously is not stout enough to hold my camera setup. What would be a cost-friendly option? Is there any place to find used equipment? Thanks for any input.
rw

Ive seen a few hunting shows use these:

http://www.gomuddy.com/store/maincat-Camera-Arms/3.html

Not sure $300 bucks is cost effective, but neither is replacing a $1700 camera after it falls 20ft.

The HunterCam Cradle line is awesome! They have more quality models to offer than any other. I have tried several models as I have changed cameras and I loved every one of them. What I like the best is I can use my cradle in more places than just for hunting too. Call and ask to speak to someone. They will help you with anything.

http://www.huntercamcradle.com/

I really like the muddy stuff! They make a cheaper model for $150 that is great! I believe it is their outfitter model