Couldn't something like this work? Instead of havin a grid 32x32 make it 40x40 where 1 pixel is 1m
Oh, here is the sourcethread
Or image points?
Or waypoints?
Or as example capx zones
Sidenote if you puting waypoints...
Nice to show grid in general in C2
file|home|View
goto view
select show grid and choose your grid width/height