What strap locks have the lowest profile? I have Schaller right now, and it has the button that sticks out on the body, which is fine, but it gets loose easily when my bass is in the gig bag and I don't like putting all that pressure on it when the bass is in the case vertically. So... what strap locks have a system with a smaller button or a lower profile? I found the Dunlop flush mount, but not sure if the horn on my Squier VM Jazz 5 is too narrow or not. What the best options other than the Dunlops for a small profile?