It's hard to find a "prototypical SF" to be honest, and if you try too hard to the perfect one, you might end up drafting badly--e.g., Dorell Wright, Donte Greene, Jeff Green, etc. Grant Hill looked like the prototypical SF, but he couldn't shoot outside. Glenn Robinson was a shooter, but didn't play defense and couldn't drive. Gerald Wallace has nice defense and hang time, but lacks shooting touch. TMac was an offensive machine, but didn't play defense. Jamal Mashburn was a decent prototype for an SF, as was Scottie Pippen, but Pippen was a shaky outside shooter. Josh Howard is a decent all-around SF in terms of skill set. I guess Kevin Durant is the new standard, unless you want a power-3 like Carmello, but even Durant lacks post skills and is a so-so passer.
When it's all said and done, the SF position might actually have the least direct impact on winning games, just based on where he's positioned on the floor in most sets. We may be better off deciding if we're looking for a shooter, a slasher, a defender, a facilitator, a rebounder, etc. and see if we can find someone with 2 or 3 of these skills. Assume everyone is going to have pluses and minuses. I would assume having a guy who can play defense, run out on breaks and hit open looks is the ideal.
The lure of Perry Jones is to get a guy who has a couple unguardable moves 10-feet from the hoop, and also has the ability to dump the ball off to cutters or post players. Anything else he gives you, in terms of rebounds, defensive plays, etc. is a bonus.
I like this post. This is also why I'm high on K-G. He guards the other teams best player (1 through 4) and still stuffs the stat sheet. He's rare, I'm tellin' y'all.