I ran across an old kashimax seat that had mongoose printed on the side, at a LBS yesterday and the owner and I were trying to remember when they came out. I thought they came out on gussetted team or supergooses but he thought it was later than that. I havent seen one in a looong time and he wouldnt come off of it for anything, and I offered just about everything for it. He said it was his when he was a kid and couldnt let it go.
It was shaped like the shotgun seat in this ebay auction
clickyI think it was supergooses around 1980 they came on. what do you goose experts say?