Does anybody know where I can purchase an aftermarket handle bar that can be used for Pump Foiling. I think a “scooter handle bar” could bring me more stability and holding on to the handle bar could help me position myself better on the board. Hope to get some information.
For $1700 you can get the handle and the board from Foilscoot… 
Home made.
Roam Foils https://www.roamfoils.com/ has a scoot board coming out soon that will be reasonably priced.
Also I think the XStar guys in Ukraine sell a reasonably priced scoot handle
Another option: Don’t be that guy 
Recently built one of these and its so fun. it looks ridiculous and it is