Another thought if you can't find a sickle mower: If you can find an offset tow behind, they do a pretty good job getting under stuff as well. As long as there is a foot or two clearance between the ground and the lower branches, the offset mower will fit right in. I get under all sorts of stuff with this offset.
Mine is a 66 inch, but you don't need to get anything that big. I never have really looked for a rear tow behind on craigslist, but I bet they come up more than a LGT compatible sickle mowers. Also-fwiw- at least on a recent EBAY listing of an LGT compatible sickle mower- the seller knew what he had, and wanted top $$$ for it.
As a bonus, you don't need to remove the belly deck to set up the sickle mower/vice versa. Just hook up the tow behind, and mow away!
An additional bonus is that when your LGT deck inevitably breaks (belt/bearing,rusts out, etc...) - You can still mow the lawn with the tow behind while you fix the lgt deck (or mow your lawn twice as fast with the tow behind)
I've included two pics- one of the offset mower, and two of the pines/ cedars that I mow under for example The tree on the left is cut kind of high (I didn't do that), but the trees behind the pole and to the right of the picture are pretty low. (But don't look TOO hard because in the picture I hadn't mowed under any of them recently in the pic!) LOL!
Just something to think about, especially if you run across one at a yard sale or something and can't locate a sickle.
In my latest pipe dream- I'm considering beginning to search for a sickle mower that attaches via rear 3 point and attaching to a pto drive, or mounting a small independent motor on it.
Edited by dualresponse1731, July 05, 2016 - 06:51 PM.