According to Harvey Hillary there are at least 5 things wrong with every boat in a championship fleet. Each one of those things has the potential to slow the boat down. Writing down the problems that you find when sailing will make it more likely that you will fix them.
In the Cherub class I think most of us can find more than 5 things wrong with our boats. The Boat Amnesty page was created to give a place to list defects and to cross them off over the winter as they are repaired.
Urgent work
Repairs
Upgrades
Repairs
Upgrades
Setup
Repair Accident Damage from Nationals
Other Work
Urgent work
Urgent work
Repairs
Upgrades
Upgrades
Repairs Strengthen side decks in way of shroud plates.