EVERY T-Bird and Ric I've tried sent it's head to the floor as soon as I took my left hand away, I don't want to drill holes, change my strap, play with a pick only, or wrap the strap over the body, as for strap buttons on the neck plate I'd rather deal with neck dive than a bass tipping forwards all the time!
I get gas for T-birds and Rics every few years (less since going all five strings), a quick blast on one in a shop normally sorts me out for a few years