I have a GW 335 and have begun fishing for tuna off of cape cod. I've invested in some new gear w/ bent rod butts and now realize that the stock GW rod holders really won't work for me. Has anyone upgraded their rod holders and would recommend a specific brand or type? Thinking I'd need a swivel base holder. As well, would like to just swap out existing holders w/ new without drilling new holes. Not sure if that is possible.