Shorthanded Razz

[Parallax]

When playing 3 or 4 handed razz, how often are you guys bluffing your door card? I'll usually complete any 3 card 8, but is there an optimal % to bluff these situations? In a situation where I have (QJ)3 against 2-3 face cards, I am completing this every time, but with the same hand against a 9 and 8, how often are you completing? Just curious, as I feel like this is a part of my razz game that I struggle with.