Topband: Fire tower as support for 1/4-wave sloper

[John Harper]

Hello,

I have obtained permission to operate from what I hope will be an ideal 
location (better than my home QTH) for the upcoming ARRL 160 Meter Contest - 
a fire tower-like tower, 90 feet tall way up on a hilltop above the 
surrounding terrain with a building at the base with all the creature 
comforts. My plan is to put up a sloper. Although I've never used a sloper 
before on any band, I understand they can be hit or miss as far as 
performance goes.

My question is:
To achieve resonance, is it better to trim the length of the sloper or 
experiment with the height of where it's fed on the tower?The tower in 
question is steel, about 20' on a side with a steel stairway going up the 
center.

Thanks,

John Harper AE5X
http://www.ae5x.com