SkateBoard HalfPipe Plans ??

[Trigga09]

Hi all,

I am trying to build a mini halfpipe skateboard ramp for my son. Does anyone have any plans or great ideas on building this? I was thinking about maybe doing a 3 1/2' - 4' ramp with not too much vert. Hope someone out there got some good ideas.

 

[unique1]

My neighbor built one for my son so I just asked him about it.
The Length is 24', it has 8' of flat bottom and the platforms are 2' long.

I messaged you the source they got the plans from. I'm not sure if we can post links here. =/