We had a runabout with a 35 HP motor when I was a kid. Very small boat. Closed bow. Nameplate capacity of 5, but only room for 4. We found a pair of old wood skis at a garage sale. I spent countless hours skiing on them. I loved seeing how far I could jump across the wake (with both skis) and I could ski for about an hour without stopping or falling. I was in great shape back then, and 2 skis behind a 35 HP motor wasn't exactly a "hang on for your life" kind of ride, so skiing for an hour isn't a big feat. I never got tired of going. Always had a great time. We would go every night after supper during the summer.
Slaloming from that boat was ALMOST impossible though. 35 HP is not enough power. I got up on one ski just a couple times, but only because a friend and I were seeing who could do it first. He beat me to it, but we both got up. It was a real nightmare. It took more than 2 minutes to get up out of the water with that 35 HP motor. The water spray was impossible, couldn't see, couldn't breath. Completely exhausted once you got up. It was no fun. Skiing on two skis was a no brainier with that boat.
I remember one time my brother was back from college, and he wanted to drive the boat while I skid. So I was in the water putting my skis on, my friend threw me the rope, and here's where the idiot part comes in. Instead of slowly tightening the rope, he just floored it. I think it was his first time ever even being in a boat. My dad wasn't there, or this never would have happened. Remember, it was just a 35 HP, and I had a couple seconds to decide whether to hang on or let go. Actually, letting go didn't enter my mind. It was more like "how do I hold the handle" that was going through my mind. I grabbed it with a fist on each side, and held it up by my chin so I could absorb some of the shock with my arms. I leaned way back, floating flat on the water, looking straight up at the sky, never did that before, and hung on to the handle as hard as I could.
I was yanked out of the water in a heartbeat. I was so far forward in just an instant, that I almost did a face-plant. Because I was holding the handle with one fist on each side, the handle was pointing straight up and down, if you can picture that. I was leaning so far forward that the tip of the handle was in the water in front of me between the skis spraying me in the face. I was that close to going in face first, but managed to stand up. Thinking back, it was stupid. Idiot brother, never drove a boat before. Never been in a boat before. The rope could have snapped and hit me in the face. I could have dislocated a shoulder or something. But, you don't remember the times you played it safe. Don't tell my kids that! Ha ha ha, I'm talking like this was life or death or something. I'm sure there are much better stories. Kids are waking up now. Gotta go.
I did have a TON of fun skiing though. Nothing professional like JeffS describes, just plain good fun. That's why I was looking for skiis for the kids. Skiing is a lot of fun, with one ski or two. Remember, with two skis, you can ski a lot longer. Might not be as "cool" but it is fun.