I have four Bloods, 3 of which I raised from young. When they are young they will strike and can be vocal and pissy with little reason. They are much more pig headed than a ball and let their opinion be I known.
You should have let it be for a week before starting to handle it. It needs time to get used to and feel comfortable in its new home. Then once you start handling you need to make steady motions and let it know you are not there to harm but a little strike is not going to make you leave. My young ones tagged me often but a few months in that was over except for shed times when they can be pretty ornery. I never used a hook and wanted them to get used to being touched by hand. Your snake will stay smaller than my Bloods but they are so heavy bodied and strong I rather have two good hands on them. Their power is no joke and make a Ball look like a wimp.
It is very common for stp to be vocal their entire life. All of mine hiss, huff, and puff whenever they are disturbed. This is normal and will not change. Working with them will get them used to you and you to them. Take it slow and don't push to hard so you dont stress it out. Make the handling short in the beginning(5-10mins).