The SOP for winching with an IRB, or any small inflatable, is for it to stop engines and deploy the sea anchor. The IRB formating on the ac is done largely because the aforementioned SOP is boring.
I can't believe the previous poster who slagged off the RNLI, so what if it attracts a few Walter Mittys. This nation should be grateful that we have such an incredible organisation like the RNLI. All volunteer, charity funded, and willing to risk all for nothing more than altruistic reasons.