I came across a late 60's early 70's Marquis tri-hull bow rider today. Sitting under an opened sided shed with bushes grown up around it made it hard to look at. Boat has a built in 18 gallon gas tank and is full of leaves and junk but floor and transom looked and felt solid as far as I can tell. Manufacturers tag says South Carolina, has a 4 cyl. Mercury 650 on it. Most on the wires on the motor were dry rotted like other merc motors I've seen from this time period. Trailer looked good, of course needed tires. Does anybody have any info on this defunct boat line? Also what is a boat like this worth? I don't know if motor is locked or not, I will stop by and get more info. Thanks Mike