'Bunk' trailer...not bunker, just to clarify. Your boat is not remotely riding correctly on that trailer; it obviously was not custom-built for it.
A 185 Stingray is not a long boat, but I would think at the minimum you'd have (4) bunks running from the rear of the trailer forward about 8' - 10' long, and they should conform to the hull snugly. The inner ones will likely be longer. Then of course the bow support needs to be properly placed both fore/aft on the trailer as well as at the right height.
I attached a picture of how my old Baja sat on its bunks...it's important to NOT be sitting on a strake...
Some more pictures would definitely help us help you.