gryffles use to play it , i play odd times but not to your level
I did

I changed name kinda surprised someone remembers that I mentioned it here given I'm an online guy and dont know anyone here IRL.
I played 1/2-3/6 on stars a ton for a decent winrate. I'm playing NL now a lot more and havnt played much stud8 lately.
I think the keys to stud8 are understanding your equity vs an opponents hand (
www.twodimes.net has a stud8 equity calculator which is incredibly useful for getting your play street by street in order as your equity changes immensely across the streets.
The second key is really paying attention to your opponents: for example Player A will fold 4th if he misses and you catch good, player B will not fold 4th if he misses and you catch good - you can bluff player A with scary boards and steal from him a ton when you're in late position and can steal - not so much from player B.
The biggest mistakes you will see are people not folding on early streets and folding too much on 7th.
to reply to a few of the points people have mentioned.
#1Instigator - To put it simply yes,
www.twodimes.net has equity calcs, the better players will not only know their odds to hit various draws but also their equity on every street and will put in really thing 52/48 type bets in.
M3boy - high hands become much more profitable in shorthanded play. In an 8 handed game with JJ3 in first position you can safely muck, in a three handed game you should be raising. Its crucial to stud8 success online to understand how the dynamics change as you go add another player to the game as the game plays 8 handed and the player pool isnt incredibly deep which means games can frequently break or play shorthanded for hours. Not like 9 handed hold'em where if a table gets short handed you can join the other 5 billion tables.