Move to New Mexico. In this state only two places you can't carry a non concealed weapon. A bar or a voting booth. So you can pack openly, even right up to the bank teller window! Amazing how nobody carjacks you with a rifle on the rack in the pickup window! Seriously, nothing inspires politeness like an unconcealed weapon! Another story, a local hot spring began to be a popular site for local and non local outlaw biker gangs. Most of my hippie friends stopped going there after a few got my ass kicked, or at least got run out of there by bikers storys. I simply put the pistol on the edge of the pool, hammer cocked. Too funny to see these big scary bikers, going, oops, excuse me sir, I didn't know this pool was occupied, and slinking away.
As for the ping sound, I ride full throttle at all times, so I doubt they'd see me in time to get ready to jump out before I was long gone. Even 22 mph is stilll pretty fast. A hilltop would be where I'd be vulnerable. A similar thing happened in Albuquerque last summer, beat the crap out of a biker on the riverside trail and took his wallet. Mace is a good idea actually, would carry nice in a waterbottle cage. Like the dogs at my house, it's all about making the tweaker choose somebody else.
