I did my crop spray training with Ag Rotors near Gettysburg Pennsylvania ( Are they still going ?) witha great old guy called Hank Whitfield . Flying was on a range of 47,s some of which were wooden blades . I think the ride was softer on the wood ...except for the time when 3 ft of trailing edge came off a blade on the Hiller . The vibration was so bad you could not read any instruments ....Hank took over for that bit !!!
ps He had well over 20k hrs on recips back then so i would love to know what he ended up at !!