I have always used motion and now that I'm getting a little better at game planning, I want to switch up to a flex.  I had enough scholarships this season, so I've recruited a full lineup with the offensive change in mind.  I emphasized Sp, Per, and Pa and managed to get 5 decent recruits:

http://www.whatifsports.com/hd/TeamProfile/Recruiting.aspx?tid=5872

As you can see, I'm going kind of small but all of these guys should be able to shoot 3s once they get some practice time in.

I always had trouble getting the right guys to take shots using motion ("More talented players aren't utilized as much as they could be").  Can anyone who has experience using Flex provide me with any advice on how to set my distribution to best utilize a good perimeter team with limited post presence?

There is really no visible difference between motion, flex and triangle. Imo, switching offense is a waste of time. Increase the distro of the guy you want (in any of the three sets I mentioned) to take alot of shots to 25-30, and if he has sufficient stamina to stay on the floor for 25min+, he will score a ton. 

You can do the same with motion. You will more than likely get the same results no matter what offense you use.

the offenses are definitely different. you can push motion to operate like the other offenses, but it costs you efficiency (still, often worth it).

setting distro is easier in the flex. you can push your guards in particular, which sounds what you are looking for. just keep upping the best guys' distro till you start to see an impact on performance, then cut it back a little. you can easily have a guard take like 25% of shots in flex. arguably you can have them take like 40% without much penalty.

I'm going to try a multiple guard lineup (G-G-G-F-F).  I have a C with high REB and ATH that I'm going to try to get 10-12 minutes a game out of for help on the boards.  The way I read the definition of Flex ("Doesn't require a big presence inside to be effective"), I assumed that LP was not a great concern.  

Thanks to all for your input!

IMO, ignoring the LP numbers in any of the offenses is a mistake.

The Flex offense generally is supposed to offer more opportunities for a big outside and for perimeter players inside.  Or more specifically with all the screening that is done, more mismatches should result.   So common sense leads one to believe that if the HD Flex actually runs anything like the RL flex, the bigs need good PER numbers and the guards need better than average LP numbers.  But that doesn't mean ignore LP for bigs and PER for guards, as that still is where a majority of their shots may come from.

Gary Williams ran a typical flex at Maryland and Wisconsin uses the swing which basically is a variation of the flex.  Over the past decade it's not uncommon for the Badger bigs to shoot 10+ 3pt a game.