Like a Prius ,just push the button and silently move forward,,,unless we have a horn fitted as suggested elsewhere.
As for shutting the engine down, our roots are in 2strokes when an engine stoppage was a matter of when not if, now a lot of our aircraft are fitted with an engine that has an ,,,erm,,, reputation ,,,,,I'd like to think the first time you have to deal with a stoppage isn't alone ( or worse ,with a loved one on board) ,I thank my instructor for the training I've had, some schools not doing some things that should be done, I've met pilots from a certain Qld school who have NEVER actually stalled an aircraft ,the FI did the stall, and recovered immediately ,the student sat and watched,,,,I've got a mate who did a check ride in a Vic GA school with a instructor who wouldn't let him stall an aerobatic aircraft,,,,to me that is terribly dangerous! The instructor has a duty to prepare the student to avert dying,,,,tootleling around the sky on a nice day is a side benefit
Matty