+1 what everybody said. Used kicker motor for trolling, $800-$2K. Downriggers, $1000. Updated 2 battery marine system with switch, $500. VHF and antenna, $200. GPS/ fishfinder, $700. Then you have canvas, bilge pump, anchor systems, 2 stroke oil (if it's a 2 stroke), salt-b-gone, 303 protectant, Coast Guard requirements (flares, horn, etc.), and practical safety stuff like a "ditch bag" with handheld VHF, and so forth, and so on, and on, and on.

The market for used boats can be fierce for one that's a genuine good deal. Do your homework, have your cash in hand, and pull the trigger when you know it's the one. Good luck on joining the circus!