I continue to subscribe to the "there are no stupid questions" and believe no matter how much we think we know can always learn more.
However, what might work best for an experienced operator might spell disaster for someone new to tractors. I like to travel backwards while spreading gravel out of my bucket and do it on flat land or hills, but I don't know that I would recommend it to others. I agree with those who advocate spreading downhill and especially with something light like a BX. If you can't carry much in your bucket going down hill then just make more trips if it is more comfortable to you. I know it can be frustratingly slow as I have put gravel on roads with a one mile round trip from the rock pile to the road as that is as close as a truck could get.