said by Book
:I can see other references like nearby Water Towers and so forth but I was just wondering if anyone had any other tricks I could try other than firing up some radios (which would involve erecting a tower at point B) and hoping for the best.
Using a large 12"x12" mirror for a mirror to flash is the best low tech method to determine line of site. The mirror flashes stand out very well. Use a close object inline with the target and move the mirror up and down and across in small zig-zags watching the flash on the close object.