Need: A photo of my boyfriend skateboarding should move so it looks like he's skate-surfing on a wave. I want this to have to be done manually so the action can be repeated at all speeds without having to open and close the page.
Final mechanism used: basic slot-guided pull-strip.
1st attempt: slot-guided manual pull-strip
Why it works: this is the easiest method to move something from point A to point B, in my opinion. I can add a stopper tab to make my image stop wherever I want (see below). I don't necessarily need the guiding sleeves as used below, since the slot determines to range of movement.
Meows did not approve of my research.