Engine for 4.2M Polaris RIB
My first post. I just ordered a 4.2M Aluminum RIB from Polaris and am struggling with my engine choice.
Here is my challenge. I am using this boat with an electric boat loader with a custom rack over the canopy on my truck. The boat will be tiller operated with one bin seat. The boat is a aluminum hulled and 2.3m (6'9) wide by 4.2m (13'6) long. It weighs 127kg (280lbs). The boat has launching wheels which will help with mounting the motor.
Because it is being carried on the rack, I have to physically load the OB. I have a custom dolly for the motor to make things easier.
Obviously weight is a huge issue, and after researching I have narrowed my choices to the following:
Option 1: 2 Stroke Mercury 30HP ELH- Weight: 114lbs. $2,645 New
Option 2: 4 Stroke Honda 30HP- Weight 159lbs. This is the lightest 30 made, all others are way too heavy. At 159lbs, it is questionable on portability. $5,000 New
Option 3: 4 Stroke Yamaha 25HP- Weight: 145lbs. Is this enough power? $4,400 New
I would love a 4 stroke for all the known reasons, but price and weight are huge considerations. Will I be disappointed with a 25HP?
As for use, the boat will carry primarily two adults, two small kids (5), and a dog. It will be used on rivers, ocean and lakes. I would ultimately like to carry 4 adults and the two kids.
Thanks in advance for any help.