If you see 3:33 on the display after shooting Time Machine, flip both flippers 3 times for Secret Mania.
Video mode all day is a good strategy (D-O-G over and over). It's a safe shot, it collects junk, and value increases 500K each time.
Running from Spike easier than shooting him. Use flippers to move junk selection off hair dryer b/f plunging & after a successful run.