So, based on the responses, to "peen" or "stake" a bolt is simply to damage the end of the bolt so that the nut, if it loosened to any appreciable degree, would not accidently come off the bolt. The suggestion to use a center punch to mar the top of the bolt (and threads) seems like it would work and would be a lot easier than trying to bend the bolt.
I ordered a new set of hub bolts from Langs and they should be in today. I will stake them as described. I was warned by a long-time Model T guy to not use regular bolts from the hardware store as they will not stand up to the strain. However, they might work temporarily in a jam as one of the posters indicated.
Safety first and always...
Thanks so much for the replies.