I hate bump feed heads as well. I have a different head that I think came from my Stihl dealer. Maybe it came from Lowe's.
Its basically a flat plastic disk with holes in the sides. You feed 3 precut pieces of trimmer line through the holes. They fold in half so its 6 lines that are cutting. The pieces are about 12in. The head came with some precut pieces but I bought a spool and cut my own.
After they break, stop and feed in 3 more lines. I use heavy line and usually only change once for my 1 acre yard. Zero headaches.