Regarding mowing with or without a FEL, in my opinion would depend entirely on your situation as to terrain, obstacles etc. My previous B7100 had a FEL which was not demountable, and I mowed quite a bit with a heavy Woods brush hog with no problem. However it was all pretty much out in the open, and often hilly. The only minus might have been somewhat limited visibility.
On the other hand, several times as I recall, the loader was a real definite asset in being able to lay down brush and blackberries ahead of the tractor and mower as well as balancing that heavy mower.
And last point, just checked the Westendorf web site and they do apparently offer an alternate FEL subframe for a B7100 using a belly mower because the "normal" subframe to reinforce the tractor chassis would interfere.
Regards
Sherweld
On the other hand, several times as I recall, the loader was a real definite asset in being able to lay down brush and blackberries ahead of the tractor and mower as well as balancing that heavy mower.
And last point, just checked the Westendorf web site and they do apparently offer an alternate FEL subframe for a B7100 using a belly mower because the "normal" subframe to reinforce the tractor chassis would interfere.
Regards
Sherweld