Wade: The grab handles on my 190 Bay are on the side of my console below the top of the dash. I presume that you mean the rail that runs over the top of the windshield.
When the top is fully down, the rear legs are about the same height as the windshield rail. If this is a concern, then you can avoid this by not lowering the top all the way, resting it on a block or support so that the angle of the legs are closer to horizontal.
If you look carefully at the photo of my boat with the top down, you will see what I am referring to.
http://render1.snapfish.com/render2/.../of=50,590,421
Regards,
John