The original thread asks about weight on the leader? I personally wouldn't put any shot on the actual leader.
The way I run beads differs based on the water I'm fishing. If it's slow and clear, I'll run a 3ft leader with a sliding bead. I'll adjust at what I think the water depth is from float to the hook, and come up a foot. After that I'll continue to adjust down until I feel my weights grabbing bottom. Literally even 2 inches can make a difference.
If I'm fishing fast water, I'll use an 18 inch leader and try to start a foot off bottom and move deeper till I tap. In fast water, I tend to get most of my fish on beads letting it drag bottom a touch. That way I know my bead is rolling bottom. It's a way more natural presentation than having a bead floating through the water column. I actually pick up a ton of fish on fly rods indicator fishing beads behind my buddies fishing pin - fly fishing allows you to use tiny split shots (that don't get snagged), and I typically adjust 2 ft deeper than I think the run is. The rolling of the bead along bottom seems to out fish a conventional pin drift set up by at least 2 to 1 in my experiences (especially for trout).