I disagree. Rescue teaches some very valuable skills where it doesn't matter if you have the perfect trim or not.The main reason I ask is someone had mentioned that I would probably want a LOT more dive experience before the rescue course, as in probably at least 100 and closer to 200-300 dives before attempting. I thought that seemed excessive, and was more inclined and interested to build these skills sooner in my career rather than later.
I'm in complete agreement with Jim (well, I pretty much always am).