If you hook a load to your FEL via chain, hook it evenly to each side of the bucket.
PLUS if you are backing up with the chained load use only 2WD and disengage any differential lock. That way, if you start to tip, the instant the high side rear wheel comes off the ground, your progress will STOP. If you have diff lock on and/or 4WD engaged, the tractor will continue to move AND TIP. Ask me how I know this, DUH!!!!!!!!!!!!!!
Stay safe......
Ron