Am I worrying about nothing

[kingsnakes]

Hi

I own a Red tail Boa who is 8 feet long and 8 years old, I have only had him about 4 weeks. The chap I got him off has had him since hatchling and only been bitten once and that was a mistake on he's part. I also thought my Boa was a female but have been informed he is definately male. I handle him every other day and he seems fine. The problem I have (if it is a problem) is he spends so much time in the S shape when out of his tank (unless he is trying to get away) I usually have him out for a hour or so, and he is always gauranteed to hiss at least 4 to 5 times in the time he is out, he dosen't do long hisses they are just short ones. He has never made any attempt to bite me, but my concern is will he bite me or anybody else and thats why he's hissing. If anyone visits me I always keep him in is Vivarium because I'm worried he may try to bite who is visiting me if I have him out. Would really appreciate some advice on this matter or to hear from people who have or have had this problem (if it is a problem)

Thanks.