Small of back is a good choice, as long as your jacket doesnt ride up, check that. Even if open carry is legal in your state you dont need the headache of freaked out sheeple calling the popo. Strong or weak side works, I recomend outside the wasteband for comfort, once again check for concealment with your riding jacket. Shoulder holster is in my opininon one of the best ways on a bike, only prob is when you get of the bike and take of your jacket you need a better cover garnment than small of back or strong/weak side. One note is if you decide to go small of back, get a left side in the wastband holster if you are righty, or right side if you are lefty, that will place youre piece for correct draw. Another option is to ride with a backpack, then transfer to on your person of your choice when you stop. This does leave you vunerable when riding, at lights, parking, etc, as you dont have immediate access.