yes, they call those trick skis, and you've got yourself an old pair of them. those things are actually pretty cool, and a definite score for 25 bucks. here's a link to what trick skis are today:
theyre trick skis. theyre much shorter than wakeskis, and they definitely feel more like rollerblades on water. super fun for rippin switch behind the boat and stuff
^ that longboard is sick! My neighbor had a pair of these trick skis, all I ever saw him do was attempt to get up switch, so I'm not sure how much of a pro he is.... Trick skis are to wake skis as snow blades are to snow skis?