Brick streets

Catch a king on fourth with an otherwise low hand and you often check-fold to pressure. Don't pay fifth hoping for miracles with two high cards already.

Fifth street pricing in limit Razz still punishes stubborness. If your board is high and theirs is low, believe them more than your down-card hopes.

If you catch a pair on fourth, treat it as a brick almost always. Continuing with a pair and a high card is how Razz donations happen.