If your handy checkout Ken's Site at:

www.parmarng.org/freeidaho/default.html

He has the plans for one on it and a lot of great ideas that you can build. A friend and I built couple of his PVC stands and they work wonderful and are easy to build. Built the two in less than a couple of hours.

Take care;

Dave

P.S.

The Door surprise target is just plain evil... :evil (I love it.)