Re: What technique would you apply to neutralize Brazilian Jujitsu attacker
Not really. Kaitenage is actually quite different than a whizzer. First off, kaitenage is an underhook on a person's arm, while a whizzer is an overhook. Kaitenage is focused on control near the elbow joint while the higher a whizzer is, the better.
Also, no, kaitenage is not a good defense in relation to a single leg or a double leg take down. I'm not sure how popular it is in Australia, but go to any high school wrestling team here in the States and try kaitenage while someone shoots in on you will be repeatedly hitting the mat.