I have a 16' Smokercraft Lodge, and I mounted my riggers with a plate that is made for a Smokercraft Alaskan. You can get them from Auburn Sports and Marine or Sportco. I think it was $35 for each plate, plus the cost of the stainless hardware. I have had them on my boat for years and have never had a problem. I run 12 or 15 pound balls, have gotten snagged on bottom, crab pots, etc. and they are still strong. I even have the Brutus Pot Puller that I attach to these same mounts and they pull my big, commercial style pots full of crab without issue.
Correction, I had ONE rivet start to work it's way loose after 3 years of abuse. Simple enough though, I drilled it out, put in a new rivet and expect to get another 3 or more years out of it before having to do anything to it.
Like Myassis, mine are mounted about 49" from the transom on the port side and 54" on the starboard. Never had an issue with the lines getting caught in the motor. Hope this helps. PS, here are some pics of the mounts...

[img]http://www.northwestfishingreports.com/forum/download/file.php?id=14649[/img] [img]http://www.northwestfishingreports.com/forum/download/file.php?id=14648[/img] [img]http://www.northwestfishingreports.com/forum/download/file.php?id=14647[/img]

Also, you can't see it in the pics, but I put a piece of 3/4" HDPE under the plate for a backing material. Good luck!