Here’s a workout to develop and improve your ability to play ghost notes on an eight-note groove, playing different bass drum combinations. You can apply the exercise of course on the ride cymbal with various left-foot hi-hat ostinato. The challenging thing is to play the two ghost notes before and after the backbeat, so start slowly at around 60 bpm to focus on the movements and stay relaxed.
You can download the PDF here. Keep on drumming!
Francis' Drumming Blog 