As far as possible! I run my boards out as far as I can depending on the boat traffic that day. 30-40 ft minimum. I started running copper last year off otter boats. I have a 300 on a Saltist and a 500 on a Tekota. I can tell you I much prefer 45 lbs Blood Run copper. It seems to deploy easier and kinks less. Use spro swivels for all connections and tie in about 7 ft of heavy mono between the backing and copper. Your releases will hold/attach much better to mono. Also, don't have it in the water unless its attached to the board line. It makes a huge mess when it tangles everything....but their's days it outproduces everything else!