I have a macgregor 21 and I am rigging it for a spinnaker. I know that I need an uphaul and a downhaul, but I am wondering if they need to be adjustable or could i make them fixed. (The downhaul anchored at the bottom of the mast and the uphaul half way up the mast, so that the pole would always be perpendicular to the mast) I just dont want to make it to hard to sail. And I think it would be less to worry about If I didn't have two more lines to mess around with. What do you think I should do? Thanks, John