Jump ski binding position HELP PLEASE

[101driver]

So I have got a pair of connelly 200+ jump ski's and finally got a pair of wiley jump bindings to go on them. Came to mount them and there are lots of holes and clearly two very different mounting witness marks on the skiis one is 28" from rear the other 26" from rear (rear of plate and hoop to back of ski) Some of the previous holes line up with both witness marks some do not.

Any advice on position would be appreciated. At this stage we just want to get used to skii's do some wake jumping ahead of going and getting some tuition on the jump next year.

 

[Thomasasher]

I would most likely think they are need to be at 28" .  What length are the skis?

[101driver]

@Thomasasher Thank you for your reply 69" long.

[101driver]

This is what I ended up with, asked a couple of friends with jump ski's where their binding were and length of ski's. All similar length around 70" so just ratio the distance for mine, came right on top of a mounting hole set, so went with that and drilled out for the remaining holes, holding ski by rear binding finger holes ski hangs down slightly at front on theirs and mine so going with that. When I am next at coaching I will ask the jump coach to have a look.

On another issue I have ducked the right ski binding out slightly. I mentioned this before in another thread. My ankle was set out of line in surgery rebuild so I struggle on a pair. Test results so far: performing squats whilst stood on a wipe board, marked feet position for parallel leg movement ie knee not coming in. Result bare foot 10.5 degrees ducked out, with jump bindings on which support my ankle very well 12 degrees. As I can ski on snow ski's but not fast when running parallel as right ski hunts, I figure I would only duck the binding out the smallest amount that works. Gone for 4.5 Degrees so far. Trialled last night, videoed. My right knee is pointing in slightly but the ski's are parallel and nearly the same angle on the water. No hunting so I am going to try and work with this angle and see how it goes.