SAN DIEGO (AP) _ Bob Hope will make his entrance at a Super Bowl pre-game show in style - aboard a ski-nosed golf cart molded in his image.

The show will salute the 84-year-old entertainer's career in vaudeville, the Ziegfeld Follies, radio, film and USO performances for troops abroad. More than 500 local volunteers will appear on six stages at San Diego Jack Murphy Stadium.

''We wanted to get a star larger than life, like the Super Bowl itself,'' producer Dan Witkowski says. The comedian will ride in on his custom golf cart that echoes the shape of his ski nose.

Videotaped messages from Lucille Ball, George Burns, Milton Berle and others will be shown on two giant screens, and the Sunday extravaganza also will feature 30,000 balloons, 77 dancers, and a pair each of mules and camels.

About 450 local military personnel will march in formation for the show's finale, ''Stars and Stripes Forever.''

''It's corny. It's very corny. But I think there is good corn and bad corn,'' Witkowski said.

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SAN DIEGO (AP) - A huge firework and laser show with a patriotic theme will kick off Super Bowl weekend with a big bang Friday, its organizers say.

Producer John Steenhoven says the event will be the ''largest special effects spectacular ever seen in the city.'' Thousands of people are expected to turn out at Seaport Village to view the show, which starts at 6 p.m.

Steenhoven, who operates a Newport Beach production firm, says the program required 5,500 pounds of explosive from eight different countries, 135,000 pounds of sand, four launching barges, and 54 miles of wire and cable.

The show will begin with a taped introduction from President Reagan and the launching of ''the world's largest inflatable football,'' Steenhoven said. The football will have lighted laces and hold 8,500 cubic feet of air.

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BISMARCK, N.D. (AP) - A Depression-era law that bans Sunday boxing in North Dakota has officials scrambling to find a way to stage Virgil Hill's second World Boxing Association title defense in his adopted state.

Promoters who on Tuesday morning had triumphantly announced Hill's agreement to fight in the Bismarck Civic Center on Easter Sunday were burning up the phone wires that afternoon after Attorney General Nicholas Spaeth said the bout could be illegal.

ABC-TV plans a national broadcast of the April 3 fight between Hill, who boasts a 20-0 professional record as a light heavyweight, and Jean Emebe of Cameroon, 25-4, who is the WBA's No. 1 challenger.

Spaeth said he planned to confer today with Bill Sorensen, one of the bout's local promoters, to explore ways of complying with a 1935 law that forbids ''boxing, sparring or wrestling exhibitions'' on Sunday.

Spaeth said state law exempted non-profit enterprises from the ban, and added the bout could be held if promoters could reorganize their financial structure.

''There is a glimmer of hope, but I just can't tell you how large that glimmer is,'' Spaeth said.

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DENVER (AP) - Denver Broncos quarterback John Elway again has agreed to donate his name and national popularity to boost Colorado.

Elway will appear in newspaper advertisements promoting Colorado's economic development efforts, part of the continuing ''Denver - By a Mile'' campaign for the Greater Denver Chamber of Commerce, officials say.

The ads will appear Friday in the eastern edition of The Wall Street Journal and in The Los Angeles Times on Super Bowl Sunday.

Elway will lead the Broncos in Super Bowl XXII against the Washington Redskins in San Diego on Sunday.

The $28,000 cost of the advertisements will be split between the state and metropolitan Denver chambers of commerce, said Ruth Ross, state agencies spokeswoman.

Elway first appeared free of charge in ads prior to last year's Super Bowl, when the Broncos lost to the New York Giants 39-20.