I have a very good running 88 Johnson 9.9 with e start. But I keep feeling that my boat is a little under powered. I have found a dealer/mechanic that has an 88 Evinrude 15, but it's not e start, he says he would do an even trade. Provided that it is in as good shape as the 9.9 would you give up the e start to get a bigger motor? My boat is a 14ft v hull rated up to 24hp (1967 crestliner).