How can I clear a slider?

[whateveriam]

Can someone explain me how to clear a slider? I mean position before you kick the slider? should I be with my knees bent or loose? should I do an ollie to get on it or just keep on riding on the water all the way through and just push on my heels to start sliding? should I have to ease a little bit or not? and body position once Im sliding(standing tall or crouching) , do I have to push with my heels or not, is it easier to slide with the board parallel to the slider or perpendicular? boat speed, etc, thanx.

The one that Im thinking to slide is not very tall (3 or 4 feet), and it starts inside the water(you don't necessary need to jump to kick it)

If this helps, I can get big air, do flips, etc