Agree with Horton, it needs to be super simple to log a set and advanced features need to be optional.
Ideally I would be able to log a set by just entering a date and click save. Then when I get home, have the option to enter all the other stuff (speed, line length, boat, ZO setting, water temp, other). The set log definitely needs an option to copy/paste a set then change one or two things and save.
It would be nice if the ski settings were in a different tab than the set log. Then when logging a set you could use a drop down to select setup x for this set.