Why do we need snelgrove boards and demaree boards..i have never used either of these boards or methods for increase.. i simply split the hive i do not like into nucs and add a new mated Queen to each colony in the nuc...it can't get much easier than that.. i have went from one colony to three and from three to seven and i have given two nucs away..
above methods can produce good numbers of queen cells and can be used to increase from your prefered colony. So just depends on your goals