When is it okay to use forward tilt?

When picking up very low pallets/skids (with no bottom boards) off the ground, forward tilt can be quite helpful. When lifting, you should then apply back tilt until mast vertical or tilted back. Slight forward tilt can be used when stacking loads onto racking or onto each other, as it lets you see that the load is fully resting on the rack/load underneath before reversing out. Stacking with mast vertical is also ideal, but harder to achieve. Stacking with back tilt isn't particularly recommended, as the opposite side cannot be seen and may not be fully rested down on the rack/load underneath.