Is there such a thing as .... ?
Once upon a time we had a weedwacker even I could start. We are in our 70's and 80's now, still have lots of trees over large acreage to trim, and on our fourth gas trimmer. My DH has arthritis and can no longer pull much with his arms. If I remember right, our first weedwacker had a spool containing just one string. After starting the first time for me, I could go all over the farm and change my own string and restart the trimmer myself--with no problem. We have had three since then, all used just a few times, that sit in our garage. Battery trimmer was not powerful enough and too much area for electric trimmer.
If not, is there an engineer out there that would like to get rich--fast? Just invent a trimmer for me and others like me. PLEASE HURRY!