Sure thing. The 8ft would put the antenna on the same post I'm using for the Winegard FM antenna. I don't appear to get much by adding additional height, until the 200-250ft range - at which point it turns to a 1edge, but here are the elevations you requested:
25 ft:
http://www.tvfool.com/?option=com_wr...1ddac216e456c2
40 ft:
http://www.tvfool.com/?option=com_wr...1ddaa2c09bea56
60 ft:
http://www.tvfool.com/?option=com_wr...1dda10f88ee9dc