Maybe get some pack goats. Load them up with lots of heavy bells. If the bells don't scare away the bears, they'll weigh the goats down enough that you can run faster than them.
We had *something* rip the wire off of our rabbit tractor and kill the rabbit. It was chicken wire held on with fencing staples, pretty sturdy.
Try 100 things. 2 will work out, but you will never know in advance which 2. This tiny ad might be one:
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