a couple more thoughts about motorsailing to Catalina
Oh, yes, although this is less important in the winter, your friend may want to get to Catalina in plenty of time to secure a good mooring, especially if you're going to Avalon. If you're late getting to Catalina, especially during popular warm season weekends, they might be out of balls in Avalon harbor and you might have to take one of the less desirable moorings north of the Casino in more exposed, rolly, rougher water. And, you do have less daylight in the winter, so the crossing needs to get done efficiently.
Motorsailing gives a more comfortable motion than plain motoring and if there's a bit of wind it'll give a nice combination of fuel savings and speed.