In the first panel, a person who appears to be from "Madhouse" ("Archie's Mad House") is seen walking by wearing a very small version of Jughead's hat on his head.
No credits given, but artwork can be identified as Al Hartley because in this comic Mr. Weatherbee looks exactly like he does in the Spire title "Archie Gets A Job".
Translations: "Plastic surfer" - probably meaning a non-surfer who tries to impress girls by carrying a surfboard around [a reference to plastic surfer figurines]; "Boss surfer" - "Boss" is surf lingo for "cool" (courtesy of www.riptionary.com); "skimboard" - "Glassed plywood or fiberglassed board for riding shallow beaches on the waters' edge." (courtesy of www.riptionary.com)
Jerry and Shirley don't have last names.
Occupies top half of the page. Bottom half is "Drive Jive".
Occupies the bottom half of the page. Top half is "Pin Din".
Occupies the top half of the page. Bottom half is "Nice Price".
Occupies the bottom half of the page. Top half is "More Bounce to the Ounce".
Most of the gags are visual gags. There is no featured character here.
I don't know if it's actually possible to use oil paints underwater.
The comic does not clearly show how Archie and Reggie formed the line between them, but the explanation given here is the only one that makes sense.
The bottom half of the second page includes the usual offer to join the Archie Club, which now costs 25 cents.
There is a minor blooper of sorts in this story. In the third panel, we can see quite clearly that Archie's surfboard has been broken. No explanation is given as to how Archie winds up with a fully-intact surfboard in the fifth panel.
Nice visual gag in the first panel - one judge is seen staring at Veronica with his mouth wide open and his tongue hanging out...