lower one to carry a monofilament line threaded thru the feedline so as to stabilise it when the wind blows. My ladder line danced about madly in the breeze. Am looking at about 70ft vertical drop, so stablisation might be a good idea. You may have tried this, it's so simple, twist the ladder line, about 1 twist per ft. Sure slowed mine. makes for a much more stable feedline. jm2c. Don w5djw