Thanks for the responses all.
Dave I like your idea however the hull
has been dry in a shed for seven months. Would not want to put the last coat barrier on after it is out in the open for two months.
Ziggy, Bottcote might be a good compromise to hold off on the finale coats of bottom paint.
Guessing all agree we need to put something on the barrier coat after the last coat is applied and boat gets moved out of the shed?