How do you seal your small block oil pan?

I don't use the rubbers at all. Lay a big bead of RTV at the rear. I use something like Aviation 300 on the pan. When I get the pan on and bolted, I take a finger / towel and smooth the bead of RTV, then don't touch it (don't run it) for 2 days.

One big problem is a used pan with dimpled bolt holes. The pan flange MUST be straight and flat. And don't use the factory bolt torque. tighten the bolts "screwdriver handle" tight. If you use a ratchet, hold it around the top of the head like a screwdriver, don't use the handle at all.