Vessel assist has had more reliable locations over they years, and seems more participation.
Not knocking SeaTow,, just seems like VA is in more places, more often IMHO.
Don't cross the San Pedro channel without it.
They have a rep in Avalon which is a BFD with advantages to numberous to list.
We don't just go to Catalina to anchor & hang out, we go and play with the boat.
For example:
Nite time at the east end lite with a 10 mill candelpower lite (COSTCO $36) checking out the flying fish.
If ya break down you are F()<#ed deluxe "You done had it", and they can be on the scene within 20 minutes or less and haul you back to your mooring.