When you've got some blow lug left after a session, thread then onto a trace as you normally would. Wrap them in cling film and bang them in the freezer.
When you come to use them, take them down in a flask, unwrap them, and use them straight away.
I've had fish up to 5lb on them, they do work.
Its ideal as well for when you first get down, set your gear up, clip on one of these baits, and you're fishing straight away while you're getting the rest of your gear set up.