I'm not sure where to ask this question, but I just got a new Big Jon Runabout downrigger for Christmas.  It came with a 150' cable (which I replaced with 200') and a 24" boom.  The question I have is what is the largest downrigger ball/weight I can use with this?  I can't find the info in the box or the website.  I'm thinking 6# or 8#.  I plan on using this in Lake Tahoe where lake trout are often caught about 180' to 200' down (reason why I changed out the cable).  Thanks.