Park and loop doesn't work.
The whole concept is a joke.
In my experience if I work with someone who needs to be finished on time, that person will usually er on the safe side and leave more than is necessary to ensure he returns to office on time- quite often we then have to take our time at the end to be back at the appropriate time.
Now obviously this is inefficient, and it used to annoy the hell out of me, but now I've seen the attitude of most managers I don't blame them for taking this approach.
After all it only takes more people than usual to not be in and before you know it you're struggling to finish.
It's the system of 2 different people working at different rates, and 2 people doing loops at the same time and one having say 8 service calls and the other having 3 and the whole thing breaks down, the knock on effect being it's impossible to predict accurately what time you're going to finish.
Whoever dreamt it up doesn't have a clue how things work whilst out on delivery.
That same well paid idiot is probably now working on his next project to justify his job, oblivious to how a nation of generally hard working people struggle with his last cock up on a daily basis.
Edit- just read some other posts in this thread, we are not allowed to take mail back- we have to leave what we think we can't complete.
Which way is the norm/correct procedure here??