Not good
I am not a big fan of roller furling at all. If I were a full time cruiser then I might be I just hate the shape of a partial rolled up sail. For racing I would vote no on rolling up a 155 to anything. I think when you roll up any sail you loose the shape that is was designed for. The shape was designed to be furled all the way out when you roll it to a 135 that fast shape is now gone. Not to mention the big rolled up leading edge that you will have. In PHRF they will give you a credit for the RF but it is mostly baised on the smaller sail area not the shape. You could collect the RF credit and then have a 155%, 135%, and a 98% all cut for RF but they will all be missing the sail area for being a RF sail. Some boats like Melgas 24 do have RF but it is either rolled all up or all out nothing in between. They might take one roll on it just because it is blowing that hard but the rule would be all out.My biggest gripe is people who race and don't have ther boat race ready and then they cry about the number they are giving. They will complain about some number they have and when you look at ther boat they have a high cut old 150 head sail on a Roller Furling a 3 bladed prop and a 40 grit bottom. Ther boat just is not in race condition. Now this is fine for them they will go out race and have a good time but they will more then likly finish in the back of the fleet then complain about it. Getting the boat race ready takes time and $$, having good fast sail's and a fast bottom and time on the boat. It takes a comitment to get the boat to where it needs to be. I spent tremendous amount of time sanding the bottom of my boat and fairing out the keel and it is a never ending thing for me to keep the boat fast. But it is what I need to do and having the boat in top condition is the difference between 1st and 5th. So if you are commited to racing the 23 do all that you can with boat prep and $$. If RF is the only way you can go then get a sail cut that can be a deck sweeper and try and find a good used 130 and switch them when needed. The 23 can be a very good boat as a racer and cruiser. But needs to be set up to be a racer when it is race day. Dennis Conner's biggest advantage over all the other sailors was boat prep. He talks about it in all his book's. I race against a very competitive fleet on Lake Erie and we all love racing against each other, and we all, above all love beating each other. I'll bet you money Mike Auston on Lunasea will have his boat fast this spring and he will have me in his sites come time for the Mill's Race and he Know's he will be in mine.Cliff 28.5 "Red Dog"