Feeding in the enclosure can be done without any issues and it perfectly acceptable to do, in fact, it is easier for some ppl and some prefer to do so. HOWEVER, be mindful of the type of substrate the snake lives in b/c you dont want him/her swallowing its substrate, that opens you/the snake up for trouble. Substrate can be covered with newspaper or paper towels, but with a snake you really dont know well, I dont know that I would want to take the time to cover substrate to get bit when removing the towels or newspaper while it is still in feeding mode.

I do not feed any of my snakes in thier enclosures (due to the type of substrate used in my enclosures), including my red tail. For me, this is a personal choice and convienence. While they are out, thier enclosures get a full once over, fresh water, etc. However, doing this only works well if you have a few snakes, as it can be time consuming to remove many snakes one at a time for feeding.

Here is my feeding routine:

1. Use anti bacterial hand soap (water free kind), cleans and gets any smells off of me.
2.Put Caleb (redtail) into the feeding bin
3.Dangle rat over/by him with long hemostats

It dont take long for him to latch onto the rats, in fact he is a very very aggressive feeder, always has been, much more so than the bp's. From what I can tell, most boas are like this (redtail type). Caleb is almost 4 foot now, he has been fed in a feeding bin since I got him when he was only 26 inches long, just last Sept. After Caleb eats, I leave him in the feeding bin for about 20 mins. Lets him settle down and not be high strung in feeding mode when it is time to vacate the feeding bin. When it is time to get him out, I use the hand cleaner on my hands again, and even farther up my arms to my elbows usually. Open his feeding bin, there have been times he is not completely settled, so I move slowly, and touch his body to let him know it is me and not prey. Usually this is enough for him to settle the rest of the way to get him out and back to his enclosure. There have been times I have had to use a hook to convince (mind you, he has never struck at me or acted aggressive with me) him he wants to go the other way so I can grab ahold of him, but I have not been bit ever! I think the reason this has worked out so well for me, is because he is conditioned to it. So I dont know how well the other boa you are going to help feed will do with this right off the bat... but I believe he/she can be conditioned to this type of feeding with time and patience. And yes, you can get HUGE feeding bin/housing type things..... Iris makes a huge bin much like the sterilites and rubber maids we are using for housing, just cant remember the model. A feeding bin does not need to be as big as the snakes enclosure. But feeding HUGE snakes such as retics, burms and some larger redtails is not going to happen in a feeding bin, so you must decide if the snake can be fed in one.