Hi folks. I'm looking at getting a 2.5 HP 4 stroke for my 2.6 meter sib. I recently watched a video reviewing 4 major brands online. The Yamaha Suzuki Honda and selva. All 2.6 HP. Two of these were able to get a 2.7 meter sib to plane. The Yamaha and the selva. Yet they were all 2.5 HP. ?? The two that did had higher cc capacity. ??