you probably need to recut the jib when you want to use her on the roller furler ... why not have an expert doing this and have her cut down so she will be 155 .... than you will not take a hit for the larger sail and maybe even get a credit for the roller furler ( in some cases up to 6 points , but be sure and ask first in your region ) That would give you a total credit of 12 ... I would tend to think that 12 sec is hard to beat with a 155 on a roller versus a 163 on the deck ....
Thor
