Keith
The mast is only 1' longer. You could drop it down a foot and lengthen the pole. The 6.0 NE is running the same height as the I20. I think Chris Bolton is running the 6.0NE spinnaker on his 20. I am not sure what the head to end of pole measurement is. Rake the mast back as well. Maybe one of the FLA guys could measure it.