One trolley I landed a BO-105 on after every flight was very small and did not leave a lot of room for error.
Fore and Aft we were very constrained in that the aircraft had to be well forward on the trolley so the hangar doors could close behind us after we were winched inside.
To aid that....we used an ATV Fiberglass Warning Pole....but removed the flag and added a Tennis Ball.
The trick was to touch the Tennis Ball with the nose of the aircraft.....and a trick it was as the fiberglass rod was very flexible and wallowed around from the down wash.
Over time it became second nature and was not at all difficult unless we had a really strong gusty wind blowing around the hospital building.