  Man, it's tough sometimes, working 50 hours per week and trying to train bonsai too. A sprinkler system is always inferior to good hand watering, but when we hit our 100+ degrees days (last year over a month of them), it's the only way I can get a second watering in.
When you get two odd days off a week (never together), one of them being Sunday for family stuff, the house jobs backlog seems overwhelming and pinching that maple seems like it can wait another day or two. Then next week rolls around and it's too late. This time of year it's hard for me to keep my mind on work instead of the trees. So it's a balancing act, one that I guess I will have to perfect through the years. Any ideas? Chris 
