Gary,
Zardoz has been discussed many times in the Epic Tuning forum. Below is from their rep who contributed to one thread. There is also discussion about Zardoz clogging the pores of the base, so it needs to be gotten out prior to rewaxing. Way too much for my poor brain.
Thanks for using our Zardoz product. I am the sales and marketing director and I wanted to jump in here. We have found from many users that in the colder, drier snow, you will find Zardoz will "stick." In wet, warm snow, Zardoz dominates. We created a low fluoro (white) hard wax for those drier, colder conditions because users where experiencing the sticking sensation.
Yes many of our testers (patrolers, instructors, racers) have found that Zardoz can extend the life of the wax by several days.
Personally, I enjoy hot waxing my base. I love the process and the skill that it develops. However, when you are on a vacation and you get back to the condo after 3 or 4 days of hard skiing or boarding, you don't really want to spend an hour slumped over your skis with an iron. You want to kick back with a beer and talk about that epic mogul run. Zardoz lets me do that. I apply every day of a vacation to make sure my wax stays put.
I find that everyone has their preferred waxing process and I would never claim that Zardoz is the end all be all of waxes. I encourage you to try to use it in your own way that enhances your style and conditions on your slopes. Conditions change every day and you may find that one day is perfect for Zardoz and the next day is not. But, no matter what, it's better to have SOMETHING on your base rather than NOTHING!