I am hoping for a shot or 2 next month to attempt a 1000k badge flight.

I realize that the turnpoint or turnpoints need to be
an FAI 90 degree sector.

What about start and finish, I plan to use the gliderport for my
start and finish, does this also require the 90 degree sector or
is a line required?

If a line is required what is the max width of the line?

Thanks for any info, Joe