Mine is not very nice at night. He gets into hunt mode and anything that enters the cage becomes a target. He will even track shadows which says alot for their vision. However, during the day he is a perfect gentleman and I can handle him whenever I want except during the blue phase of a shed where he is kinda grumpy. I absolutely love to handle him and he is my favorite to take out. Each snake is different but mine tolerates me well and I can handle him often without any issues.
The only tip I can think of is when you get them off their perch. What I found works best is to spin him over where he is coiled facing the floor. I keep my hand on and under him as I do this and he will simply release into my hand and come out without a fuss. Trying to take them off the perch as they sit seems to make them grip and squeeze the bar and makes it more difficult to remove them without force which can be harmful to their delicate build. Spinning them over doesn't seem to cause this and instead seems to make them want to release to reposition but when they do they are in your hand and wrap it instead.
If you have anything specific let me know but that's all I can think of right now.