The most common and most likely answer to this crossword clue is the 6 letter word CADDIE
I've seen this crossword clue in The Sunday Telegraph
C
A
D
D
I
E
More clues leading to the result CADDIE
- Peg out to follow rotter, golfer’s attendant
- Taxi driver has change of heart as driver’s assistant?
- . Assistant on course to stop working under disreputable man
- He’ll take drivers round the course
- Tiger’s assistant, a scoundrel to the end
- Helper on course scoundrel gets pass on
- Fellow attached to many different clubs
- Leaves container, as told, for assistant on course
- Club porter
- Dishonourable man to stop living with assistant
Buddy explains!

The straight part
We know that "Helper on course" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case helper on course = caddie.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CADDIE mean?
CADDIE noun- A golfer's assistant and adviser.
- To serve as a golf caddie.
- A Scottish errand boy, porter, or messenger.
- A small tray with a handle and compartments for holding items.
- A lightweight freestanding rack designed to hold accessories.
- A lightweight wheeled cart, often fitted with shelves or racks, or attached to a bicycle as a conveyance for a child.
- A tea caddy.