First of all PM me before you buy a boat , specially a used
Second I think cheaper than dirt has a survival pack , water tight tube with a mossy 500 short barrel . http://www.cheaperthandirt.com/95012-55.html
I carry my sks , bit over kill but damn they are one solid gun in my book .
I dont care to carry a pistol on the boat but I have carried my K-frame 22 out to sea for some trolling target practice . A mountain dew bottle caught in the prop wash at 3-4 knots is extremely entertaining and a challenge . If you got the room , buy a dual AR-15 tri-pod mount for the bow , nothing says bad ass like a bow mounted weapons system and nothing will get you pulled quicker .
Remember Wardens and Coasties are a bit more uptight that the land dwellers with blue lights
Seriously though , call me before you buy a used boat if you have not already got it . If your close enough or dont mind shipping , I sell ALL of my trolling motors and major electronics at cost like GPS and the bit higher end fish finders . I can get the 24v rip tide w/ auto pilot for around 1100.00
I can get power poles for 850 ish with a retail of 1400.00