the masters (and only the masters) should allow participants to use a vehicle of transport around the course- but not a golf cart. it would have to be something equally challenging and dangerous as walking. like they could ride a camel, or a segway blindfolded), or a regular bicycle but with one flat tire, roller skates on grass, backwards piggyback on sibling, etc. the caddy doesn’t get to help him in any way.
the golfers would have to pick walking or their mode of transport before round 1, if they quit the mode of transport, they must drop from the tournament.