The three point raises and lowers regardless whether the MMM is on, off, or pinned up. So...
1. You can't mow with an implement on the three point, it will drag.
2. You can't use an implement on the three point without the MMM pinned or removed - the MMM will drag.
Pinning the MMM up takes seconds. Removing it takes ~5 min, re-install takes ~10-15 min. Best done on a hard level surface.
Clear as mud eh?
It's hard to think about mowing when the snow is flying /forums/images/graemlins/tongue.gif