So... I know this is my 2nd topic but it's a different question. For around a month I have been teaching my cocker spaniel recall with a whistle, we practise on every walk and she is quite good 
Last week at puppy class the lady mentioned they would be teaching recall this week. Shall I take my whistle and carry on with my method or should I learn her's and use it at home or something as we only use the whistle outside.
I don't think she would take kindly to me bringing a whistle BTW. she doesn't really listen to my opinions.