It depends on the boat and the risk it carries. Earlier, I talked about a fine proportional to the value of the boat that would have been moved while the drain plug was in place. In Alberta, for example, you get a $180 fine if you move your boat when the drain plug is in place. For someone who has a boat inherited from their grandfather and works for minimum wage, that's a lot of money. However, their boat is not really a risk. It is less of a risk than a large boat for water sports that costs $250,000, and filling up its gas tank costs $420. For those who can afford a boat like that, a $180 fine is not a problem. It's cheaper than a full tank of gas.
That is why we are suggesting a fine representing 5% of the boat's value. It becomes more restrictive for people who own large boats, without being excessive. If they can afford a $250,000 boat, they can pay such a fine.