Thanks,, Everything here is 2 edge or tropo, and not much is totally reliable.. I am doing ok for what I have to work with actually!... bobAs far as UHF antenna selection goes, one thing I have noticed is a highly-directional Yagi antenna like the renowned 91XG will have more resistance to multipath issues. Comparing the gain specs and even beam width plots may not show much difference between bowtie antenna like the CM4228HD and DB8e. I did find for my particular situation with UHF 1EDGE behind a hill, the 91XG helped noticeably with multipath. After switching to the Yagi a 95% reliable station went to 100% reliable, an improvement worth doing the antenna shuffle.
So, depending on your tolerance for experiments and antenna-swapping, your weak signals refracting over terrain may be better served by a UHF Yagi vs. a bowtie. Unfortunately there is no way to know for sure without putting up an antenna and giving it a try.