If your antenna tower is on the roof, there is no way that a tech can put it any higher than he can reach. Also, if he is an in house dish tech, if he has to get on your roof, he is obligated by dish policy to put on a safety harness before getting on the roof. This requires him to put an anchor bracket in your roof w/ three lag bolts to latch his harness onto. He will repair the roof with supplies he should carry after he removes the bracket. But then again, if its a sub contractor, he'll probably just run up the roof as they don't have to follow the same requirements as dish employees. Maybe they will be able to find an alternate location for your dish.
Do you have an eastern or western arc dish? They could always swing you to the other arc if possible. Good Luck!
EDIT: Sorry, after reading the original post again, I see he has a 1000 dish. I would see if the tech could put up a 1000.4 dish and be done with it. OP states he has two receivers, and from what I gather they are both 222k's, so EA would work fine, depending on his location I guess.