Yards as units are not supported in the current versions, since it was mostly geared towards in-car usage... You can capture distances in kilometers (check the config.txt file) and then roughly convert them in to yards by multiplying to 1000 (actually 1km=1094 yards)
You can mark the holes/obsticles with add POI option, and then edit _MY_POIS file in your map's directory to group/rename them and add custom graphics... it takes up to 10 different icons per POI file...
Here is sample:
!IMAGE:holes_icon.png,
40.666530,-73.988311,1st hole,easy one,
40.666530,-73.988311,2st hole,aim left,
40.666530,-73.988311,3st hole,ail right,
!IMAGE:Obsticles1_icon.png,
0.666530,-73.988311,pond1,bla bla,
40.666230,-73.93311,pond2,aprox 200 ft wide,
!IMAGE:Obsticles2_icon.png,
40.666530,-73.983411,somethin else,bla bla,
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