I'm getting ready to do some work to my rig. I have a Lund on a trailer
that looks like a combination of three trailers, plus some homemade welding
thrown in. In the back at the heaviest point are two planks that look like
they have rollers in them that support most of the boat's weight. There are
two side guides, and the receiver Y shaped rubber yoke in front. Should I
add a couple or three of spool rollers under the keel? I do need to add a
couple of little guides up front where it sometimes does not come straight
into the Y if I am too deep with the trailer. Or should I watch the loading
more closely, and try to power on? Still, powering on, with the flat
planks, the boat may tend to miss the front Y. If I can get it centered on
the keel rollers, it should be kept straight by the two side plank guides
that are just under the gunnels when the whole rig is out of the water.
Just how much support should one put under a boat on a trailer?

Steve