Well, I'd say sharpening a solid 3 blade is definitely more foolproof. Lay it flat and a stone and pull it to you. Doesn't get easier than that!And just my .02 on IW broadheads, I’ve shot the same 200 grain single bevel through 5 whitetails into the dirt on the other side and used the same broadhead for all my target shooting for the last 3 years and only had to do light touch ups on a stone to keep it sharp. Nothing more fool proof for sharpening than single bevels in my opinion. I think at this rate my 3 pack is on pace to last me at least 12 years or more short of losing one in the snow or something.
Not knocking the IW. Just sayin