Is it sensible, to have an Futura 141-2010 and a ultrasonic 147 to each other? The difference is only 6 liters, however the chance that you will plane ealier isn't familiar with me. Can somebody say more about that? My sails are an North Warp. 11.0m2, NP-H2 9.2-7.7-6.7 and I also have an 122 Futura 2010.
Thanks for helping?