Most of today's succesfull (DSR)reefers are newbees, because they began with a clean slate. They were learning very fast how to adept the new methods.
It's usually the veteran reefers who were struggling and having a hard time to get rid off "old habbits".
Many who claimed to have 30+ years of reefing experience are realy struggling to adept to the new ways.
They usually say "everything used to be better and easier in the old day"
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So, keep in mind that progression is about learning new ways rather than sticking to old ways.
happy DSR reefer