Recommend going with the Scotty 60". This will help extend your gear out if you have two riggers in the water. It will also help if you decide you want to brave a stacker for an additional rod. Plus, if you decide to get a bigger boat down the road, you still have a nice set of riggers with a life time warranty.

If you go fishing by yourself, just bring the boom all the way in...

Downriggin'
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"If you are not scratchin bottom, you ain't fishing deep enough!" -DR

Puget Sound Anglers, Gig Harbor Chapter