1: Complementary kicks.

Sometimes it can be frustrating getting those really big, solid kicks.
A technique I sometimes use is doubling up the kick drums.
Generally I’ll find, or more often make, a kick drum I like with good solid sub to mid bass presence, but it still seems to need extra sturdiness.
Sometimes this can be a simple EQ or compression problem, but sometimes I`m looking for a more dynamic sound.
In this situation I’ll find or make (generally I tend to mix a synthesised kick with a sampled kick) another kick with more presence in the high bass to top end frequencies.
I then blend the 2nd kick over the 1st by chopping out the lower frequencies of the 2nd, so it sits “on top” of the 1st. After then compressing the 2 this gives a nice full present and crisp kick, with loads of bottom end woomph and nice punchy mid and top.

Also, a lot of people seem to neglect the top end of their kicks.
A nice crisp, balanced top end on a kick drum with help the groove relationship between itself and the hats/high end percussion.