im just starting my 12mth old collie x whippet now, doing a bit of daytime mooching, havent caught anything yet but it doesnt worry me as my permission is very rough, rocky, hilly ground. as for the young pups i wont be bringing them out till at least 6mths, even then it will be for 20-30min runs during the day until they are 8mths then i will run them with the other bitch IF i think they are mature enough. dont expect anything serious from the 2 young pups this season, and i hope the 12mth old pup makes the grade