If you decide to drill and bolt, I should suggest an alternative to bolts. I don't know the correct name, but what I'm thinking of is like a bolt with no threads, and with holes through the shaft. Like the pin that holds trailer hitches together, but smaller in diameter. That goes through your ridge pole then an R-clip is inserted into a hole to keep it from falling out. I use these on my take-down rack in my pickup. Home Depot has them in the fastener aisle.
These look like they would work great too.