For an alternative view, post-wagering bonuses are perfect for me. I like to deposit with no bonus and have the freedom to cashout when I'm up. In most sessions I'll be up at some point and I need the flexibility of being able to stop at that point to avoid the age-old casino trap of not getting out when you're ahead. Which I still screw up on sometimes but at least the decision was in my hands
As long as it's a casino that doesn't f*** around with reverse times and signed authorisation forms etc, then I'll probably be around long enough to get the bonus anyway eventually. To me, auto-credited sign-up/deposit bonuses with silly WR over say 20x are simply restrictive and I avoid them like the plague unless I am simply playing for the fun.