I just finished a CARDA (California Rescue Dog Assc.) training last weekend and this was covered. A lot of people who had done the rattlesnake avoidance training (if they just took ‘snake avoidance' training, they would never search for lawyers, ex-wives, or politicians :sombrero: ) spoke very highly of the that training. Although with the warning that there are some very ‘questionable' people doing this training, so research the ‘trainer' before going.
The vet giving the first-aid class did not think the vaccine was worth getting. By the nature of the way a vaccine works, and the fact the snake's venom is quick, he did not think it was useful. Also no independent studies has shown it to be effect. All the ‘studies' that support it, are from the vaccine companies. But with anti-venom shots at $800 a pop, and multiple ones usually required, perhaps it is a good investment also.
It is nice to hear that people have had success with the vaccine. And it sure could be worth the peace of mind.