I do it like in the top picture. I've tried like the way in the bottom picture and got too many tangles. It's a time honored approach to fishing two nymphs. I have a hard enough time not tangling one fly, let alone two.
Good luck and have fun.
I caught my first green bass on a fly at my conservation club's pond earlier this year. I've caught a fair number of brown bass, but they're my usual quarry. It was small for a largemouth, but I took it on a biggish stonefly nymph under a thingamabobber (that's the actual brand name for the 'indicator'). That was a blast.
If you get to DC area, try and work in an extra day or two and we'll go hit the river. The Potomac is right here handy, but I prefer the Shenandoah which is an hour and change drive.
- Zurf
Granted B chord amnesty by King of the Mutants (Long live the king).
If it comes from the heart and you add a few beers... it'll be awesome! - Mekidsmom
When in doubt ... hats. - B.G. Dude