Donna and I did a two nighter at our local 40 minute away Hoosier National Forest. One of the sites we prefer is down in a low area and we can only get 1 and sometimes 2 t.v. channels ( I like to catch news and wx ) So I used my limited knowledge of Electronics and Signal propagation learned when I got my F.C.C. Radio Telephone 2nd class license a hundred years ago. I took two pieces of 1 ft square aluminum foil and put double sided tape around the edges and stuck them to the ceiling of the pod on the inside directly below the amplified antenna. On a Rp-172 this is where the upper cabinets are. One side is inside the cabinet and the piece to the right is exposed above the netted storage area. This is basically a passive improvement of the non exsisting ground plane below the antenna. Whammo , I went from 2 channels to 10, I know this is not a fluke as we have used this site on and off for 4 years and never got more than 2 stations at night and sometimes none in the day when signal propagation is different and the power is reduced. Give it a try its cheap. I guess you could use colored foil if you don't like silver.