Thanks LM, I'll have to declare Open House, as I'm going out and don't want another fiasco like the last.
I wasn't sure where the Guppy fitted with the Hiperbipe and Hiperlite, but this puts them in perspective (doesn't account for the odd fin though):
SNS-8 Hiperlight
This all-metal, single-seat staggerwing biplane evolved from the late Hobie Sorrell’s original aerobatic staggerwing Hiperbipe, which was marketed as a plansbuilt project. He also designed a single-seat version called the Sorrell Guppy. In the early ’80s—at the height of the ultralight boom—one of Hobie’s sons, Tim Sorrell, designed a lighter, all-metal ultralight version of the Guppy and named it the SNS-8 Hiperlight. Siblings Mark, John and Lisa joined Tim in a company that marketed the Hiperlight, which was quite different from other ultralights.
From:
Sportplanes