You do need to get a grapple that’s properly sized for your machine and unfortunately I can’t help you with that as my tractor and loader are a bit larger.
In regard to the “just get forks” advice however, as the owner of both a Tar River double lid grapple and a set of swell forks made by I don’t know who, I can attest if your dealing with logs and brush (particularly brush) a grapple is far superior to forks when used correctly. Moving a pile of brush or a bunch of limbs that were just severed from a felled tree, you push them into a pile, slide the bottom under them a bit, then roll it forward while driving forward so you have a large chunk of brush trapped between the ground, lids, and grapple bottom. Close the lids and (with my 72” Tar River) about 3/4 of a long bed pickup load of brush is in the grapple consistently, sometimes more. With some practice that can be done quite quickly without leaving a mark on the ground. Good luck doing that with forks.
You can also grab the end of a log that’s oriented wrong to get to it with the tractor and skid it out where you can get to it without ever getting off the seat or hooking up a chain/log tongs. Just don’t turn while your doing that unless you want to bend the grapple. Another thing forks won’t do.
A twin lid grapple is preferable, IMO.
If you need to move a pallet or slide under a millstone to move it or slide railroad ties off to set them 4’ up on a retaining wall or a host of other things, forks are awesome. But they’re not a grapple (unless you put a lid on them, which you can).
If you want a valid opinion on whether a grapple is superior to forks for logs and brush, ask anyone who has significant experience with both.
