when do i start my power-raking in the fall? do i need to wait for the grass to go dormant? i'm in n.e. wyoming and the weekly mowing has gotten down to pretty slim pickins.purchased a power-rake though,to keep my biz going longer than just for the mowing season. also,how do you charge to do a lawn thats power-raked,raked,then mowed?i usually charge 30-35 hr for just my weekly maintenance through the summer.should i raise the price when it comes to the power-raking or what? by the way,its my first year of having my biz,its been goin pretty dern well for me,i'ma woman doin it alone and lovin it!! so can ya help me out here with the power-raking dilema?thanx!