As for Hog Islands, these BOAs have been on the top of my list but finding available pure breds have been as difficult as finding a needle in the haystack. I may just end up with a male BCI if I can't find any Hogs.
Have you checked Morphmarket and faunaclassifieds? I think I've seen some listed on both as well as 50% hogs. It can take time finding the right animal though when you're looking for something uncommon.