Stan - I read that article and it confirmed my belief that for me, for now, light loads are better for competition. The target setters around here rarely have an edge-on target at 40 yards, preferring to get you with change ups in target speeds, odd transitions, and weird flight paths. At most 10% of targets are as hard to break as unmoving, edge-on at 40. So if I shoot 20 tournaments, 2000 targets, 200 are in this category. Roster says I might drop 1-3% of these when I'm on them (I'd be using full choke and 7/8 of 71/2's on these presentations). If I'm shooting better than usual I'll be on 75% of the 200 long shots, so using 2% 'load failures', I'm losing 3 hits per season. Meanwhile I'm dropping dozens to flinches and hundreds to gaps in my technique and skill and mental abilities.
For now, I think light loads and full chokes are helping me work on my weakest areas.