This is my first year full time doing Lawn Care, and Mulching on my own. Years ago I worked for a landscaper who taught me to edge with spade shovels. It takes alot of back breaking work but, if done well can still look really good. (my customers are always tickled pink with my hand edging) I have been apprehensive about using a power edger simply because I don't know what to expect. What do they do when they encounter rocks or large roots? I have a fairly large mulch job coming up and I was thinking about renting a bed edger from my local rental store. Is edging by hand just completely ridiculous at this point? Any tips on running these machines for a first timer? Any input would be greatly appreciated!