Thanks to all you guys for the input.
I will get a closer look at my trees and try to estimate how high
I can git er up... Would 35-40 feet be only marginal?
Should I do everything I can to get to 50 feet? I was thinking
I could buy a crappy fishing pole, climb up about 20-25 feet
and affix that to the tree... Hopefully, that would be high enough
to work OK... BTW the Matchbox is the Lite, or rated for 300 watts AM.
I have, and use on occasion, several KW matchboxes and one 300W matchbox. For example, here is data taken with one of my KW Matchboxes:http://www.w8ji.com/balun_test.htm#Ladder_Line_Voltage_and_Current_tests
if that link won't work this way in look here at the page bottom:http://www.w8ji.com/balun_test.htm
I can say with absolute certainty they do have very limited matching range compared to T network tuners, and you can run into many combinations they will not match. The fix is relatively simple, just alter the feeder length.
Planning antenna and feeder ahead is a good idea.
The biggest problem I have with stranded copperweld ladder line is rust. Get any water in the line, and the conductors can rust through. Loss is generally not significant, unless the line is wet. Wet operation is better with real air insulated line.