One person's preference is another's horror - there are good and bad arguments for anything you do with your bow when you aren't playing. But as for putting the bow in the f-hole, I think we can all agree it's a no-no - not just for the possibility of breaking the wing of of the f-hole but also snapping off the tip of the bow if it's not pulled out with care...
Before I got a trash can (quiver) I always had put my bow under A string - tip pointing down toward the bridge. Never had any issues. But, I do think it's unwise for middle and high schoolers to do this - because it does take a certain amount of coordination to lift the string with one hand, safely slide the bow under with the other hand all the while holding the bass. Once I tried to show a kid how to do this - he followed my directions with a cheap plywood bass and a glasser bow and the bow just flipped out of his hands almost dropping the bass in the process. I see all manner of bow storage in my professional travels - trash can, music stand, under string, between bridge legs/tip wedged under tailpiece near saddle, etc. The safest (but least convenient) method would of course be to place the bow back in your bow case (if you have one) - some pros keep their bow cases nearby for this very purpose. We all rationalize our predilections to some degree, don't we?
I've always stored my bass leaning in a corner of wherever I live - been doing it for decades now. I've seen people react in horror when they see or hear of it. The only real close call I've had with the bass-in-the-corner routine is when my cat gets frisky and decides it's a tree that needs swift climbing... ha ha
Chris