I dont know what kind of sole you have. My 1979 hunter 30 had a fiberglass sole with 1/4 in teak laminate on top.
All i had to do was remove the old wood, scrape and sand the sole , then cut and fit the new wood .
once cut to fit I screwed it down rather than glue it.
Material was abt $350.00 and time was abt 3 days start to finish myself.
I would definately get another estimate.