Thinking of adding a Sonic Hub to my cat. I believe BCB installs them as an option at the factory. My question is, where do they mount the speakers at on a factory install? I believe they are in the sidewall of the cockpit area but I sure dont want to drill a hole through the side of my boat. Id like to know the exact safe spot to cut holes. Anyone have any specific pictures they could share showing where their speakers are installed? I would very much appreciate it. BTW, I am connecting this to Simrad NSS8s, which I believe are compatible with the Lowrance SH. If anyone knows different, please let me know. Thanks, Dave