I recently bought a Fisherman 17 from 1987 as well - mine is tuf-weave with cross ribs. I was curious about this boat and did a little research. It’s been interesting to see how Wenonah tried to market their non-racing oriented boats - almost apologetically.
I believe the Fisherman 17 became the Spirit II in 1988. As mentioned above, the Fusherman 16 became Adirondack at some point.
I found a few scans of old Wenonah catalogs on these forums and it seems Wenonah marketed a line of “recreation hulls” in 86/87 (maybe earlier), and transitioned some of those designs to “touring hulls” in 1988 - when this hull was rebranded.
I’ll see if I can attach some screen shots of the images. They even used the same image of the boat and language in the caption.
Image 1 and 2 are scans from 86 or 87 catalog. I believe image 3 is spring / summer 88.