As far as your rod holders go, go to home depot, plumbing dept. and buy as many 1 1/2" rubber pipe caps as you need. They come with a stainless pipe clamp but truthfully the fit is so snug that it's almost not needed... but use it anyways. Remove your rod holders or the rod boxes on the gunnels and put the caps over the bottom of the rod holders, thus sealing them off from any water getting into the boat from that source. If/when they fill up just use a turkey baster (steal your wife's or go to Dollar store) to remove the water. Cheap, fast KISS solution to the problem.
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1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.
If God didn't have a purpose for us we wouldn't be here, so
Live simply, Love generously, Care deeply, Speak kindly.
(Leave the rest to God) 
Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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