Congrats
@ShawneH on the successful attachment of your bow roller to your Hunter 31.
While I am unconcerned about the way you made the attachment, where the boat will be sailed on an "inland lake", the lack of through hull attachment with stout backing plates on a boat being sailed in open ocean waters would concern me.
Bow rollers provide a wonderful convenience to the lake and coastal sailor. When sailing in open ocean or waters where large waves might break on the bow, the bow roller is a lever with a large, heavy, pointed metal weapon just waiting to be wrenched from the boat and beaten into the fiberglass hull.
Potted bolts in fiberglass are just not as secure as thru bolted attachment with solid backing plate.
We sailors need to consider the conditions to which we might subject our boat and manage our modifications accordingly.
Thanks for sharing your modification and again congrats. If you get the chance please post pictures so that you might inspire or assist other sailors as they consider improving their boat.