Hey SupraTitan - How much drop in your Hitch?

[Robsc613]

SupraTitan,
I sent you this in a private message but in case you do not check your messages (I rarely do), I put on here also.
I was wondering how much of a drop is your ball mount when towing your snowmobile trailer? I am going to pick up my trailer (and sled) tomorrrow in NY and wanted to know how much drop you are using (if any). I bought a 3 1/2" drop ball mount but after measuring the height of the hitch (20 1/2" from the ground to the center point of the receiver), I'm thinking I may need more of a drop. The trailer is a small two-place Load-Rite with the cap so its pretty low. Any help is appreciated and lets pray for snow.
Thanks,
Rob