1. a person who kayaks habitually and to excess or who sufferes from kayakaholism
2. one who spends their offspring's college fund on new gear, boats, etc... with out regard to their child's feelings or future
3. a person who drives 6 hours each way to submerge themselves in running waters enduring a good chance of injury or death with no obvious reward.
My brother and his wife are both kayakaholics. They suffer from extreme kayakaholism.