Sleds are expensive, did he offer some other location, like a pole in the yard or a tripod? if the only option is indeed a sled, then you should negotiate for a free sled.patronius said:I had an install scheduled today, but the weather didn't cooperate. The dish is going to go on a flat roof (over a carport). That's the only place that has LOS. I know that the policy is not to penetrate a flat roof to secure the dish. The installer said he would use a Sled Mount, but that it would cost $100 extra. My question is, since the flat roof is the only place they can put it, and since their policy is to not penetrate the roof, would the Sled Mount be considered standard and part of the free professional install? Or is the installer correct and I have to cough up the $100? Thanks in advance.