I don't know, my sniper toon has a sneak skill of 100 and earlier today I sneaked up on some jackals or whatever they are called, they were just stood behind a billboard waiting for some poor smuck to come along, anyway they all had their backs to me so I just strolled up(well sneaked)and dumped a C4 charge right behind them, retreated to a safe distance, and BOOM! :nuke: This was in broad daylight as well.
Not that this has anything to do with this topic, but earlier today a whole mess of NCR Troopers (roughly 10-15) bugged on that invasion of Nelson and were all huddled together in front of the crucifixes, apparently all trying to run to the exact same spot and failing to because they were all in each others' way. Anyway, saved my game and planted C4 on the one closest to the center and detonated it... they went FLYING!! I considered downloading Fraps just for that, one guy flew beyond the draw distance... lmao.
Anyway, to the OP... sneak works just fine. It really starts to show once you get it above 50, otherwise it's going to seem fairly useless... also, get the
Silent Running perk as soon as possible, big help if you intend to be in close proximity of your enemies. :ninja: