It really depends what level of detail is available for your area, and there is no obvious method to determining it. I'm lucky, both my hunting areas in NS and in SK, despite being very remote, have the super-zoom level of detail (as my Dad incredulously remarked, "you can count the bales in the field"). This is great. A few miles in away it's not zoomed in like that and next to useless for hunting purposes.
Download it and find out...or better yet go over to a friend's house who has it downloaded and see what level of detail is available for your area.
I down loaded it and it is nice to see kind of an overview of my hunting area, but it don't zoom in close enough to really see much or be a whole lot of good. Cant hardly tell the diff. between hardwood and softwood, just kind of go by lighter being hardwoods and darker being softwoods:](*,) grrrrr..... now what ....lol
There can be too much of a good thing with antler rattling.
I like to hit the horns together for a good 30- to 40-second rattling sequence and then hang them up and resist the urge to hit them again.
This works to the hunter's advantage, because if a buck has heard it, he may have been 300 or 400 yards away and he comes in and he's not exactly sure where it came from.
When finally is time to rattle again throw a slight change-up into the routine.
The second time, don't rattle as loud...