Add even more interest and operating options by moving 'Hand Car' track D inside of the second largest loop and connect largest loop to second largest loop with 2 pair of switches at the top of the layout. That way either train could traverse the two largest loops AND enjoy a direction reversal. Just remember to isolate these two loops from one another at the paired switch junction points with fiber pins.
Suggestion #2, terminate the whimsical trolley end to end route with an 'Engine House' or something similar at each end and you'll 'hide' the bumper!
Best,
Dave