Re: another (easy to answer) roller furler question
Rolling 50% in doesn't work very well, you get a terrible sail shape compared to a 100% jib.
For learning I'd use the 100%. Once you've gotten comfortable sailing try out the 150%. The 100% will likely allow you to point higher, is a lot easier to tack single handed, but will be slower off the wind or in light winds.
Resewing a UV cover is about $300-$600 depending on the size of the sail, the loft, and the type of UV cover. Have both sails inspected before doing so to make sure it is worth the money.
boats that I sail on regularly: Pearson 28-2, Rondar 505, Yankee 30, Blanchard Junior