I would just like to add, I have always been taught to do up the rug from the back leg straps first, then the chest straps, then any other straps last.
This is because if you do up the front straps first, and your horse spooks, or something happens and your horse ends up loose or panicking with the chest straps done up only, that blanket is going to end up flailing around in front of your horse until it either rips free, or your horse trips and falls on it.
Whereas if you do up the back leg straps first, and your horse spooks/gets loose/whatever, and he runs, the blanket is going to flail behind him and actually come off the back legs after a few strides without injuring your horse... Yes, I have had this happen -_-
R.I.P ~ Bubbles - 25yo tb mare - 13.04.2011 ~ 8:30am ~ passed away naturally and peacefully in my arms