That's what parking sensors are for, you just need to adjust them to go solid tone when 1" away from an object.
How do you adjust the sensors?
We have cameras on all our Golfs and it would definitely be the first option I'd look for on any new car.
I haven't had a look on the Golf because i dont need to but I did it on my CC but I'll have a look over the weekend.
No way anyone would have reversed into the parallel space I did yesterday without a rear camera without a lot of guess work or blind faith.
Once and for all it's a must have extra and expect a forward facing option sometime soon
Think this thread has answered the OP enough. And As such I would recommend any new golf purchaser to add it to the spec before any or no other option is selected