D'Eath also competed on land, by driving in the USAC Formula Vees from 1977 to 1981 and midget cars from 1982 through his retirement from racing in 1991.
Arguably his most memorable victory was in the bicentennial 1976 APBA Gold Cup unlimited hydroplane race, held on the Detroit River.
D'Eath piloted the Miss US to a narrow upset victory over Bill Muncey in the Atlas Van Lines, a hull that won the two previous Gold Cups and the three previous APBA National Championships.
In addition to being D'Eath's first Gold Cup win, it was the first Gold Cup win for a turbocharged V-12 Allison aircraft engine, the first for a cabover unlimited hull, and the first Gold Cup win for Miss US owner George Simon, who had competed in unlimited hydroplane racing since 1953.
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