I don't see how you can expect to gain much by disconnecting the a controller. The panels
put out 17 or more volts, which may do more harm than good. Thats a lot of generating power, how much stuff are you running. Maybe you need to figure ways to reduce power usage. With that much output, you could run a lot of stuff. I have the usual stuff aboard, including a small fridge, a 450ah battery
bank, and I do nicely with 300 watts of solar, and keep batteries fully charged unless I get two or three cloudy days back to back. And this is when out for weeks at a time, without ever going into a marina to plug
up, and I have a small generator
for an emergency
back up that has never been started since new. Courious what all you are using that could draw that much power. Unless of course you are trying to run an AC unit, and that aint' even gonna work.