Registering a custom glider trailer in New York (NYS DMV)

Update: so, as expected, I recently purchased a Cobra trailer from a gentleman in New Jersey (to carry a LS-3a). In New Jersey this kind of trailer has no Title, there is a simple "trailer registration" without title, inspection sticker or other complications... the good news was that in New York State there is no need for a Title either, because, I heard from the lady at the DMV, it is a single axle under 2, 000 lb. trailer and it's not "homemade". I am not sure what would have been the requirements if it was "homemade" or over 2, 000 lb., I avoided making it complicated and did not ask. There was a small issue with the VIN on the NJ registration (the last digit was a 9 instead of an 8) causing the DMV system to refuse to take the wrong VIN. This was however easily resolved by bringing a photo of the VIN from the side of the trailer itself.

So now I have this trailer registered in NY, I need to get it inspected within 10 days (I guess they want to make sure you plug in the wires properly and that the break light work), but other than that it was easy.

Thank you all for your assistance on this thread.