well, using superglue is the normal practice, but how you use it is the key...straight from the tube is useless on such small items..........
try getting a cocktail stick and squirt a little superglue ( cyano) at a time onto a used top of a margarine lid.
use the cocktail stick to put a tiny amount onto the exact place you need it ( on the boat, not the bolt head) and then add the bolt head to the boat with a pair of long nose tweezers, using another dry cocktail stick (smothered in Vaseline and wiped clean to stop the cyano sticking) to hold the head in place whilst withdrawing the tweezers. give the dry cocktail stick a wipe after each application
It's a long and laborious process but you end up with a good finish with no extra cyano cluttering the place.