Automatic heading for markers with orientation

A few of the marker types have an orientation associated with them (arrow styles).  I like to use these for K9 SAR to mark changes in behavior along with the wind direction at that location and time.  Currently, the user-interface for it in the CalTopo app is too small to really use well but moreover, the orientation should be tied to the phone's compass so you could point the phone in the direction of the wind and the marker's orientation would be set automatically.