Re: How much room between boat and guide ons?
I too have about an inch or so on the sides and since my hull has 3 distinct steps in it (flat) I set my bunks just outboard of the final step and it just snuggles nicely between for the final alignment.
If I had a v hull with lifting strakes, I'd do the same thing so that the strakes would settle between the bunks and the boat would right itself.
Mark