Allow me, on behalf of GCRA (gel coat repairers' association), to confirm that it is very good practise, and recommended by everybody in the industry even the MPBA (marine panel beaters association) for steel boat owners, and FOCME (federation of carpentry master executives) if you own a treewood vessel.
jim, don't let these p1ss taking barsturds put you off. We on RS do the same, methinks these guys have never anchored in their lives and are talking from a purely theoretical perspective.
Now you all know how clever he is and just omitted to mention that he always does the first 100m going astern while washing the anchor. See no problem.