Time in the industry does not prove anyones appitude. A short while ago there was somebody who had been in the industry for 20 years shouting the vitues of prespraying with white spirit mixed with water. The fact that white spitrit is non-ionic and is lighter than water so through a pump up sprayer would not even come out of the sprayer till empty, did not deter this guy.
People see what they want to see. As I have said before all these things are fine until you have something to compare it with. I have dry foam machines, texatherm, use dry powder have portables, encap and a truckmount. All these methods have their uses but put each system side by side with another and you will see the difference, how many people go to the trouble of taking diffeent systems out with them and comparing them, it is something that I do all the time. I am always testing different chems and methods, you cannot say that you will never improve.
If you only use one system you have to convince yourself that it is the best or just limit yoursef to the areas where that system is the best. What I have found is it is better to be equipped for every situation.
But that is what works for me .
Peter