Originally Posted by
coftedal
I think I'm understanding your question correctly - if not, let me know and I'll see if I can better help.
The Drotto latch now has an option that comes with a roller. In my case - for the 3 3/4-4" roller, the model is: XD375B. For the smaller 3-3 1/2" roller, the model is XR300B. For my Lund Adventure (and I think almost all Lunds) it was the XD375B that I needed. But, always measure just to be sure. I believe your question is stemming from the fact that just about every product picture they have shows no roller being used. But, this isn't the case anymore - or, it doesn't have to be. They have a model with and without the roller.
I installed the latch on Sunday, and it worked great. Very easy process. One thing you will likely need to plan for is that the Drotto latch - from almost all the research that I did before buying, and in my own case, will push your boat back on the trailer about 2" or so. So, you may need to plan for adjustments in that regard. In my case, it resulted in my transom hanging off the back of the bunks by about 2". What I did, was flipped my brackets that hold the bunks around (suggestion from a dealer on another forum) and that worked perfectly. It pushed my bunks back the 2" I lost to the Drotto, and now the boat is fully supported the full length on the trailer, just like it was before the Drotto latch install.