Hi,
   I would have to agree with Chris that the 4240 plow is a dandy plow and i would say that it covers trash very well, although i've only used it in corn stubble. On a local tractor clubs plow day it was my opinion that it was about the best plow there at covering up trash....and we had 38 plows working. I am pulling a 3 bottom with an Oliver Super77 diesel which is about 43 HP.... or at least it was when it was new! <!-- s:wink: --><img src="{SMILIES_PATH}/icon_wink.gif" alt=":wink:" title="Wink" /><!-- s:wink: -->  Plowing uphill or in clay soils were hard on the tractor, but I sure can make time in the sandy,flat soils!
   The wire you speak of still mystifies to this day. When I was young (1970) the farmer I was working for was trying to plow under Winter Rye that was 5 feet tall with an old 8N Ford and a 2 bottom Deereborn plow. What a struggle! He added the wire as you were describing and he swore it was lots better, but I'll be darned if I could see any difference... I remain sceptical! <!-- s:roll: --><img src="{SMILIES_PATH}/icon_rolleyes.gif" alt=":roll:" title="Rolling Eyes" /><!-- s:roll: --> 
    Just an FYI, but around here the rule of thumb is about 15 HP per 16&quot; bottom.
        Have fun!
         Cal