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Does anyone know how slow you can run a 19J on a plane?

Thanks

Never really tried to run as slow as possible I'm guessing around low 20's mph. What are you trying to do?

I need 12-13 for a disk. Last year I used full throttle on our 8 HP tin boat. The 8 HP was not enough for my 40 lb heavier brother.

I wouldn't call it a true plane...more like a bit of a plow but it works fine for a disc We stand on a chair and even used a ladder last summer. Neither the chair or the ladder are fastened to the disc. We even get in a 360 spin standing on the ladder without falling.

With my Baja the driver had to saw the throttle to maintain 12-13. It was hard to maintain speed and used a surprising amount of gas. Can you maintain a constant throttle position at disk speed in a J?

I need to try a chair this summer.

No you don't have to play with the throttle. My speedo starts at 20 so I can't confirm the 12 or 13 mph but you can tell by the wake in the pictures it works just fine.
Use a full length 75' waterski rope. It keeps the disc out of the turbulent water so it it easier to do circles and cut the wake.
Start out with the chair and then work your way up to the 3rd step of a 4 step ladder.

Here is something else we made. Lots of laughs when cruising around the lake

Used to have a cottage on Go Home Lake(uncle owned the second marina after they built 69 hwy and my wifes uncle owned the first one on that lake when you had to access from Georgian Bay)and one of our close neighbors used to entertain us weekly with a disc and a chair.That was back in the late 60's.

You wanna really freak people out??!!
1000' line, tied off to the stern lifting ring. The weight of the rope will drop it down into the water and at low speed it'll stay there.....
Boat goes by at 8 or 9 mph then a while later a chair (or ladder) with some dude sitting on it goes cruising by......they don't even notice the disk.
Garenteed to freak people out.

I don't have 1000 feet of rope and I'm not about to buy it just to fool with people. It would be fun.

I do have some old chairs, a disk, and a tinny with 8 HP. I normally start on the disk kneeling and then stand. Do you do the same while holding onto a chair?

Yes, I lay on the disk until it starts to plow and then kneel on the disk with the chair or ladder over my left shoulder while hanging onto the handle and the disk with the other hand until it planes out. Then stand up on the disk, place the chair (the old wood style with the 4 wooden legs work the best) on the disc and then stand up on the chair or ladder. There is a trick to the ladder that as you go up the steps you have to turn sideways a bit to distribute the weight evenly. As you climb the ladder your weight moves forward and the disk will submarine ..... Just takes some practice.
We tried to ski on a paddle last summer.....that is tough.