Jim,

Could you define precisely what you mean by "properly" (in terms of angle and/or anatomical landmarks)?

This was one of the 1st things I tested for myself back when I first started doing a lot of field testing 10+ y ago, and at least for me John Cobb's rule-of-thumb (haha!) for forearm angle proved to hold true (see below - "down" and "up" from that "level" position represent changes of 5-10 deg). (Note that these experiments were performed using a bog-standard spoked rear wheel and my wife's venerable P2T...hence the high baseline CdA.)