I am going to purchase a 20hp outboard for my 14-foot v-hull aluminum fishing boat...very basic boat with tiller steering. Tohasu/Nissan is looking really good from a financial and reliability standpoint (so I have read). But I have also read that the older 18hp seemed to shake alot at idle/trolling speeds. I almost spend all of my time trolling around so this is very important to me. Any one have experience with the new 20 HP or the old 18hp? I realize it is a twin and it will shake some, but is it excessive? Anyone compare with the Yamaha 20hp and Honda 20HP 4-Stokers? Thanks for your help!