Thanks everyone for your posts! So, my boat has a Lofrans Tigres windlass with 5/16 HT gypsy (or do they call that the catwalk?) .... though as indicated it is BBB chain. It looks like the Windlass likely could be changed to 3/8" if I can find where to buy the part - so far haven't found a local dealer that carries Lofrans but just started looking.
I think that the windage is a big deal with this particular boat so my sense is if the boat can take the extra weight of heavier chain, and since I didn't really like the look of the connector link options, that likely the 'safest' option would be to get new 3/8" HT and bite the bullet and feel at ease.
Hobo, I noticed that you are 42' KK and assume that since we have relatively similar boats, likely it can handle the additional weight in the front. I have heard that BBB chain does work better in a windlass than does HT, does anyone know why that would be?
Thank you all for info on washing down the chain often. Interestingly in my boat, the 'rusty' chain was definitely the first 110' out and not that on the bottom ... I think from what I am learning about the boat that likely no one has replaced or even swapped the chain end for end for about 9 years.
If I find I can't upgrade the windlass for the bigger chain, then maybe getting HT at least - specially since my chain gypsy (catwalk?) says 5/16 HT.
Thanks again for the shared info!