Don't leave a black bag of rubbish in your cockpit and then go home. Arrived down today to find a very happy crow and a cockpit that resembles a skip !
...and do not pack all your clothes in black bin bags on the boat and have a helpful 12 year old daughter decide to clean up the boat...and she tells you when you arrive home 100 miles away...and leave your 12v tv at the waterline and go to the pub!