Another way to restore some force is to include a ‘positive bob weight’ in the circuit. This is just a weight on the end of a lever attached to the flying tailplane (or elevator) control run in such a way that it tends to apply forward stick. Then as you pull g it tries to move the stick/wheel forward even harder so giving you the desired ‘stick force per g’ You can tell whether an aircraft has one of these devices because the stick will always fall forward when you let it go on the ground.