looking at used JD 3720 or 5045E tractor

   / looking at used JD 3720 or 5045E tractor #62  
I think that you will find that the std skid steer attachments are far more plentiful and usually less money.

Just an FYI. ;)
 
   / looking at used JD 3720 or 5045E tractor #63  
When you "back blade" with a bucket. It doesn't tug against those lock pins?
It does, but it's a non-issue.
The JDQA system is lightweight, extremely simple, and well proven in the ~30 years it's been around. Any implement you can effectively use on a CUT is readily available in that format.
 
   / looking at used JD 3720 or 5045E tractor #64  
I have over 600’ of gravel driveway that I back drag for maintenance and snow

In nearly 20 yrs of use, no issues, no damage or discernible wear with routine maintenance

It is well designed for the size of the machine
 

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