If you compete in any sort of pistol competition, you should know Brian Enos and Rob Leatham. If you don’t, shame on you.
IPSC (and USPSA here in America) really started with them. Yes, Jeff Cooper founded it, but these two young guys basically taught themselves and then showed us how to shoot.
Who in their right mind would experiment to find a better way than than Weaver stance? Brian and Rob, that’s who.
Do yourself a favor and read Brian’s book, Practical Shooting, every couple of years. As you progress, you will see things he says differently. And the Forward written by Rob is the most honest, straightforward piece I’ve ever seen on shooting.
I have learned most of what I know from brianenos.com and his book. Pay him a visit and be prepared to learn new things.