From a physical protection standpoint, there are four kinds of golf cart locks and upgrades to consider. Steering wheel lock A steering wheel lock is an extendable bar with hooks on either end. When locked in place, it eliminates the ability to turn the golf cart's steering wheel. Wheel boot A wheel boot is a heavy-duty clamp that affixes to one of your golf cart's tires. It immobilizes the cart by preventing the wheel from turning or rotating. Pedal lock You'd use a pedal lock on the accelerator pedal of your golf cart. The golf cart can't be driven under power when locked in place. Ignition key change Some golf cart types rely on a non-unique ignition key. That means a key for one make and model can start up any golf cart of that make and model. You can have a unique ignition starter installed to prevent this from happening.