I'm in NNJ and get all my pieces around local lakes and rivers as well. I just soak them for about a month in primed water to get them to sink, while scrubbing them down every few days to get the slime or any fungal growth off. Most times the fungus/slime won't come back after being washed off numerous times, other branches take more scrubbing or just scrapping. I always make sure the wood is very hard while picking it out. The best places for picking are rivers that are low, especially after Sandy. Bring a small handsaw and look for any trees that are downed along the river. If their root ball was in/under water at any time, even better, the wood's edges will be softened already. I never even boil my pieces and have never had a problem with transferring any type of parasite.