edv, Thanks for the info. If somehow I should win a large lottery pot in spite of the fact that I never buy tickets, I'll be sure to get one of those.
In the mean time (not Greenwich) I'll be looking for and hopefully buying and using an old fashioned sicklebar that costs much less than a car AND will work well on my compact 4x4 40HP tractor. Alternatively, I thought of buying from 2 to 4 push type rotary yard type mowers at local yard sales and making a 3PH carrier for them. Used but good running push mowers are always available from folks who first buy a big push power for their large lot then within a couple months opt for a riding mower.
Bolt them on staggered and overlapping. With my hydrauic TnT I should be able to adjust as needed to do a fair job of my pond edges. If I really wanted a PROJECT, I could always build an amphibious adapter for the tractor so I could brush hog with one wheel out in the pond so the cutter could get to the water's edge. No problem, right? Just keep the heel on the diff lock so the wheel on land drives you forward.
Patrick