quercus

Hoot every tree is different. In the beginning you will make wrong calculations because sometimes a tree looks very different when you are in it, then when you look at it from the ground.

What may seem simple at first, is a death trap once you start on it... but hey... that's what learning is all about huh.
Sometimes environment and surroundings change in time... So start on a tree as fast as you can after putting a price on it.
Say for instance you calculate a price and put that in writing, but two months later you arrive on scene and the HO built a shed under the tree?
That's a totally different situation huh....
or... you calculate your price, and you will take it down using a false rigging crotch in an adjacent tree. One month later you arrive on scene and the adjacent tree is gone, so rigging will be a lot more difficult now...
Ya'll gonna have thoughts now like... yeah then change your price and client must understand. But since I'm a little bit allergic to that kind of practices, I try to complete the job asap and stick to the price. Fast service is real good for your businness...