My agility instructor uses touch and 2o2o to teach the dog and get him comfy on the contact equipment, however, we've already agreed that Koji won't do that. She's come to realize that 2o2o cuts into time too much, and feels although it's a great training method, as many as you have pointed out, it may only be something needed for specific dogs.
I honestly don't believe being fast should be the reason. At the comp I went to the other month, we saw a crazy fast BC (of course, lol). The dog literally would slide to a stop IN the contact zone on the teeter, until it hit the ground, then zoom, he was off.
My agility instructor decided to go this way after deciding to teach Greg (oh what's his last name?) way. She said she's shaved off seconds with her dog (after she retrained him). But yup, her crazy lab will always need to do 2o2o because he wants to jump over the contacts all the time. Again, I think it's the dog.
I'd like Koji not to stop, it'll be easier for the both of us. lol. Especially me because knowing me, I'll trip over my own feet trying to stop myself. LOL.