Well there is a trick or two you could try that I've had success with. First you can wear an old t-shirt to get your scent on it (not your favorite old shirt though), then place that in the cage with him. It will help him get used to your scent and they will typically begin to associate that scent as safe (not being a threat to them). The other trick I've used is to put them in a pillowcase and simply let them sit in your lap while you watch tv or read. With the second trick, you can combine tactics and actually use a pillowcase you've slept on - combining your scent with a dark safe place and just letting them rest quietly in your lap. Unfortunately, handling is going to have to be part of it. The smaller and younger the snake is, the easier it is to acclimate them to handling. The older it gets, the less results you'll typically see. Slow, steady movements are pretty much the best - if you are calm, it makes the snake less nervous. Quick movements can illicit strikes from fear or a feeding response. If the snake is pretty nippy, or you're simply afraid of being bitten, you can always wear a pair of leather gloves. I have an adult pair of boas (both around 7' in length) that will not tolerate a lot of handling because the previous owner didn't really work with them. I can pretty much only move them around for necessities, but don't spend much 'quality' time with them like I can the boas I've raised. With these two and a couple of others I have, I wear leather gloves and use the hooks...just to be on the safe side. Being bitten isn't a really big deal IMO (cat & dog bites are MUCH worse), but I'd prefer to keep as much blood in me as possible. 
Raven