IceFF,
I agree! I have 4 electric cannon downriggers on the boat with swivel bases (two low profile and two of the older higher ones). I also think the dual rod holders are outrageously priced! (check these out).
As an alternative, you can buy a deck plate pretty cheap (or just use diamond plate) and bolt the base through it and your gunnel (with a bottom plate), thus eliminating the need for the swivel base. I have seen guys with this set up. The only hassle is you need to manually change the direction of the side riggers from out to in when you are docking.
Hope this helps!
Walt
