Re: why starters?
They DO make electronic gas vapor detectors for boats, they just are not very common on smaller craft due to cost.
However, all boats come with a natural vapor detector, the nose, some are just connected to a defective processing unit that does not run the entire pre-launch sub-routine, or due to having a superior looking GUI, feels it is immune to harm.
Just run the blower, lift the lid and take a sniff, if all is good hit the key and go have fun. It won't cost a thing.