I just bought a marine radio and antenna for my 99 Sundowner 205. I've got the radio mounted right of the driver seat below and rear of the throttle. Is there a rule of thumb as to the location of the antenna? I'm thinking on installing on the left side of the boat just forward of the passenger seat. Or should I just install on the right side near the radio. The owners manual says to keep the radio at least 3 feet from the compass and the antenna should be mounted as high as possible. Any advice would be appreciated.