I am having a hard time getting any of the large lawns I have been bidding on. I specifically am concerned my production #'s that I use for lawns 20K or smaller just dont work when the lawns are much bigger. I figure I can mow just about any property (within reason) that is 20K or less somewhere between 20-30 minutes. But say I have a 40K lawn with the second 20K part of the lawn pretty much just back and forth with minimal obstructions, minimal trimming, and minimal blowing I think my #'s just dont work. Can someone give me some guidance here. I have a 52" Ferris IS 1500 and my typical production for that mower are between 680 - 1100 Sq. Ft. per minute. SO I am using 1100 as my production # for the outer areas or more wide open areas, but I havent gotten any properties greater than about 24K. I think my price just ends up too high. Someone help em figure it out, because I would much rather be ont he larger properties than a bunch of the little ones!