poc is good for lightweight target shafts, where you up the front end wight for a more stable recovering and flying arrow. imo, this is great for a target event arrow, where the marks are long and far away (think: the old 60yd american or 100yd york rounds). i think poc can be had in the lightest weights with good spine ratings for heavier bows. dunno of any other wood that compares in light mass weight and stiff spine - maybe bamboo, but that's expensive and it's grass, not wood
the only exception might be hex pines, where the 5/16" size can be had in comparable poc weight/spine properties.
for trad events like 3d and muzzy-type shoots where the mark yardages are not more than 35 or 40, heavier and more durable shaft woods can be used.
i just fletched up some 11/32" hex pines, 29" long, 55/60# spine, 80gr internal front end nail footing weight, 190gr tusker concorde head, 5" chopped banana 4-fletch, 605gr each (no, not the pink fletched carbons!)
here are more 11/32" hex pines, 29" long, 55/60# spine, 80gr internal front end nail footing weight, 165gr ace express heads, 5" parabolic 3-fletch, 585gr