I have tried setting the cradles for my TI at the recommended 67" or 1700mm center to center and find there are large gaps between the hull and the cradles. I have found my TI sits much better with the cradles set at 1400mm, am I missing something
I sure wondered that too when I got my TI. Tom & Tony and others here and in another thread have pointed out that one can move the cradles around to get a better fit than 67 inches. Others have suggested sliding the TI back and forth to get the best fit. That all sounds great, and I'm going to take another look-see at mine and consider adjusting. But on a Trail-X trailer, sliding the boat could mean leaving a lot of the TI cantilevered out over the end of the trailer. I imagine that in NSW you deal with different trailer companies than I do.
What I wonder most about is not a perfect fit for the cradles somewhere in the middle of the TI, but support toward or at the bow and stern. I've had plastic kayaks crease and sag where a few feet hung out beyond their support. Wouldn't the leverage of an unsupported stern would put a lot of pressure on the hull at the aft end of the cradle?