Leave the pins in so that when you make a turn, with the disc raised, swinging will be limited to keep your lower links from bending/breaking. Avoid turns, other than very gradual ones, with the disc down. I broke a few lower link arms on my Ford 8n with a 6.5 ft 3-point disc, before I sprung for a stabilizer bar kit, which eliminated the problem. If you have a larger area to work, a pull-type disc is more effective than a 3-point of equal weight/disc due to better soil contact of all sections and this type is also made to allow turns when engaged.