Basically yes those are your only choices if you go on a boat and do not know anyone. I have made many dive trips to Florida solo and had to pair up with someone and it sucked. Either they were vacation divers only or inexperienced. Now that have logged a couple of hundred dives, I dive solo most of the time when I dive here in southern California. Most of the photographers I know dive solo as well. The only time I dive with someone is if I know them and have done with them before.
Well, there is the obvious choice of bringing your trusted buddy to the boat. If your trusted buddy flakes, you could always call the dive.
In the context of the Yukon, there are two scenarios that are possible - either a diver is a local or a diver is from out of town. If a diver is a local, why would it be so hard to set up this dive with a trusted buddy? If a diver is from out of town, I would question the wisdom of going to a 100ft dive, in cold water, with air on an al80, solo.
I live in NorCal. For a dive like this, this is how I would approach it:
- post on scubaboard or some other forum frequented by San Diego local divers. I would indicate that I am looking for dive buddies to dive with while in San Diego. I would indicate my experience and also the type of buddy I am looking for (not "same ocean, same day" buddies)
- I would then do a 30 ft reef shore dive to make sure that I am compatible with any generous diver willing to dive with me. If there are any "issues" to sort out, a 30ft reef dive is the second best place to discover them.
- Assuming all goes well on the 30 ft reef dive, we could progress to something more elaborate/complex such as the Yukon.
I realize that this process requires more work up front. I also realize that this sets you up to have to thumb a dive like the Yukon when you discover on your 30ft reef dive that you and your buddy are not compatible. But it is a good process that allows you to understand what you are in for long before you step on a boat.
Many proponents of solo diving like to portray a process by which a diver shows up on a cattle boat and gets paired up with some lunatic. They go on about how terrible this experience is and therefore all people are just better off to go solo in the first place. The reality is, if you step foot on that boat without knowing whether or not you have a good buddy to dive with, it is because you haven't done the legwork up front.
BTW, I have never
had to dive with an unknown buddy. Ever. And I certainly would not agree to dive with an unknown buddy to a dive like the Yukon. I have on a few occasions
chosen to dive with strangers. Those occasions have largely been 30ft reef dives.