
Source: Rick Latham
A useful one bar pattern:

Playing eighth notes with the hands in unison (left hand on hat, right hand on floor tom with a snare backbeat), drop the double kick in between the eighths as sixteenth triplets. Then throw in a couple basic sixteenth note double bass pattern every couple bars to better realize the triplet feel of the double drop.

Source: Bobby Jarzombek
A cool pattern courtesy of John Blackwell. He’s shared it on his DVD, having learned it from his friend Marcus.
The hands:
LRL RLR
Then fill in the bass drum in between the notes. The pattern turns out to be two groups of seven, played linearly:
LfRfLffRfLfRff
It’s a seven note thing. You can count it: “taka taka takadee taka taka takadee…” etc.
Play it around the kit, experimenting with different voices.