Hi There,
There are several different techniques that will work with your youngster. I'll tell you what works for me. You don't say whether he trys to bite ONCE you have him in your hands. I'm guessing, no.
I don't have a snake hook, so I pick all mine up with my hands. When I have one that is nervous about being picked up, I gently drop one end of a hand towel over their head so they can't see me or my hands reaching for them. Just drop one end down over his head so he can't see. Then reach under his belly with your other hand and scoop him up gently. When boas are kept in tanks, they sometimes freak out when they see hands coming down toward them. The towel will help with that and eventually, you won't need it.
Sometimes nervous babies will zero in on your face, so hold him far enough away that he can't zap you on the nose 
Also, make sure all your movements are SLOW and FLUID. Remember, you are a HUGE GIANT to him. He thinks you are going to eat him ANY MINUTE. Move slowly. Sit down somewhere with him and just let him glide through your fingers back and forth. If he gets still, let him be still and calm down. Do this each time you pick him up. Handle him for only a few minutes each day....maybe twice each day. Eventually he will realize he is not lunch and you are not as scary as he once thought. This may take a long time, so have patience. Remember, he only has a tiny, primitive little brain....so it will take lots of repetition.
And if you do get bitten, it's not really painful when they are young....it's just surprising. Lastly, make sure he has a place to hide away in his enclosure so that no one can see him. Handling is stressful for him, so he will need a good place to hide away if he wants.
Good luck!
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Linda Hedgpeth
lindafh@frontiernet.net
Sierra Serpents
"Life is not measured by the number of breaths we take, but by the moments that take our breath away"