Laying up in ambush is a good way to bash the bunnies, but yes its time consuming.
You could take the opportunist route, it has worked for me before, but you have to move very slowly and quietly.
Bunnies seem to see movement as well as bright/light colours. They also feel vibrations, have a hell of a sense of hearing and smell.
A mate of mine and I went bashing last week, he wandered, I laid up in wait. Score 3 to me 1 to him.
Stalk em if you can its well worth the reward.
Welcome by the way, where are you?
Phantom