Course choice is made by the challenging team with courses based on the below rough guidance.
These criteria are only a guide, and teams may mutually agree on a course not meeting this criteria, but the team being challenged will always have the power to refuse a course that does not fit the published guidance. Where a custom finish is selected the captain choosing must make the opposition aware it is not a standard finish
As noted above, during mandatory periods Route Selection may be restricted to a list of pre-approved routes.