I carry a portable electric fence or two. If game meat has been in the raft the meat pole and raft are away from camp surrounded by a fence. I’ll surround the camp with another fence. Allows me to sleep better with the family along.
Stop by or call AK Raft & Kayak and they will tell you about bear repairs they’ve done.
Be aware that cold weather greatly affects the output of those portable fence chargers. I've used a couple of different d-cell powered units and found temps in the low 20s reduce the output enough that you can't even feel the the pule with your bare hands.