Outboard motor or Inboard? Fiberglass bassboat or aluminum johnboat? Rubber raft or airboat? The seemingly logical choice would be a sailboat, however, no one really uses those for fishing anymore; they have become a plaything for the rich, and we know how Jesus felt about rich men.
Since Jesus always had an entourage of at least 12 with him, I guess he'd want something at least as large as a pontoon boat. Pontoon boats are not very conducive to fishing though, so we'll have to consider something else. A trawler maybe?