In the last pic, the insulators are just weights to put a little tension on the 17' ladder line section. This servers two purposes, first to "steer" it away from the metal flashing on the edge of the shack roof, and second, to help create a drip loop for rain, which worked well last weekend!
The W3EDP needs a resonant Z-match tuner. (Emtech ZM-2, for instance.) I instead decided to build one like this: http://www.qsl.net/wb3gck/zmatch.htm
Almost done with it: