They're in a Catch-22 situation a lot of the time. They'd give him more minutes, but he collects fouls to the point where they cannot rely on him to make it through the game. He's not only a foul magnet, he's a foul target. There are a lot of players out there smart enough to put Giles into a situation where drawing a foul from him is ridiculously easy.
I like what I see at times from Harry but he is not at this point much more than a lot of potential that hasn't yet come to fruition.
Yes, Harry can be a fouling machine at times. But if the logic is to NOT give him more minutes because of the fouling, look at the stats on a month by month basis, along with the avg minutes played:
Fouls/36 Min Avg Min/Gm
9.1 November 7.4
6.4 December 16.9
6.8 January 12.9
7.2 All Games 11.4
Last night against OKC, for example, Harry played 17 min and only picked up one foul.
What all this tells me is that giving Harry more minutes helps him (work to) improve his fouling rate. It is true that Harry has a long way to go in improving his fouling rate, and it will take more than increased playing time to get there. But giving him more minutes is a start.
p.s. I'm also going to post this in the Giles thread... hope I'm not breaking any rules by doing that.