My favorite :)

I play lock grooves with 2 decks because the chances of getting to use 3 decks in a live set are rare but 3 decks are preferable.

I don't plan anything before hand and I don't know the lock grooves I have off by heart so it's completely improv for me I like to do things on the fly then I can experience it sort of for the first time like the crowd.

I don't play them in every set just when the spirit moves me.

I agree with the fact that they need to be mixed in and out of quickly, The true techno heads can listen to them for an extended period of time and make the rest up in our heads :)

Anyways that's how I approach lock grooves and a thing I love about techno and especially lock grooves is that each dj will sound totally different with that same track or lock groove record, their own style shines through.

pm me if you want a link to a 60 min techno lock groove set with 2 turntables I did 2 years ago.