Eric - there is nothing currently available on the SG system that truly replicates ZO. Sorry to be the bearer of bad news. I too, struggle behind SG. There is too much delay in response from the boat and the mid course times are always 7:16 to 7:18 (with me, anyway). That makes the boat over react from 3 to 4 in order to get a 16:95 end time. I've been skiing great behind ZO for the past week. Got behind SG last night and struggled at first. Like you, I have SG at Nationals. My advice is to "tone-down" at the apex of your turns and don't get in a hurry. The delay in pull can work to your advantage if you let it. As I've said before, a bad driver can impact your performance much greater than any cruise system. And the deeper water at WPB will feel slower as well.ÂÂÂ