We have alot of jumps on oure indoor track and we use alot of loose parts so they are
eazy to take apart and to put them up.
We use soda trays (dont know if you call it that) to build jumps. they are fast to put up
and to take away. you just need loose boards.
To make a jump realy good we have a code. make the angles edges smooth on the take
of and landing and always make the landing angle longer then the take off for smoother
landings.
