This information is from continuous wave,com, the best Whaler site on the web
"I'm sure I don't have all of the details correct, but the story is something like this...
A Boston Whaler dealer in North Carolina (maye it was Virginia) had a falling out with Whaler and decided to build his own boats. He came out with the Wahoo line, the 1650, 1750 and 1850 are all modified cathedral type hulls similar to Whaler.
Later the the company was purchased by US Marine, a division of Brunswick that at the time included Robalo and Bayliner.
By the early 1990s there were Wahoo models up to 26' including walkarounds. In 1997 the Wahoo product line was collapsed in to Robalo, the current smaller Robalo boats are all Wahoo hulls.
Last year, US Marine sold Robalo to Marine Products Corp., the parent company of Chaparall."
I've seen a number of 17' Wahoos around Stonington, Ct., and they always seemed okay to me. They'll ride much like a Whaler-rough and wet at times. I think the hull/deck joint is riveted, unlike the Whaler, so that could be a potential problem in older hulls- leakage and looseness in that joint. You might want to check that out in the one you're looking at.