I have a 20 week old working black cocker called Charlie who has been with us now for 8 weeks. I was recommended this forum by other cocker owners as a great way to get specific advice on the cheeky little breed! I am after some suggestions on games to mentally tire him out and also tips for getting him to listen outside.
Inside the house he will happily do the sit command, a jumpy lie down (which is very funny) knows bed but has selective hearing depending on if he wants to go to bed or not, knows get down, again selective hearing here and I am trying to work on settle. He sleeps in a crate in the living room from just gone midnight till around 8.00 - 8.30 without a whimper.
When we first got him I did not have much of a dog/life balance

What I mean by this is if I am not in the same room as him when he is out of his crate during the day, he will cry until I come back, this includes simply stepping out to make a cup of tea or snack or something. Before christmas every time I wanted to do something which was going to take more than 5 minutes I would have to put him back in his crate, so he was out for 2 hours, in for 2 hours and so on until the evening time. Since New Year I am trying to spend longer out of the room with him and get him to play with his toys or kong or rest without me having to be with him. This is going okay so far but he is still uber restless and if he cannot see me he cries. I think it would help if I could spend at least 10-15 minutes 4 or 5 times a day interactively playing with him and then leave him. What indoor interactive games can I play which will mentally stimulate him and help to tire him out?
When he is going out for a walk he pulls terribly on the lead, he first had a metal lead attached to his collar (chewed anything else) but I was concerned this was making the collar rub against his neck (was looking sore). I then put him on a harness which works okay but doesn't correct his pulling. And now he is on a leather lead which just pops round the neck, this I bought from his trainer. Its quite frightening walking him as he gets so excited about anything and everything and he's quite a strong pup already, definitely going to be on the taller sider for a cocker and I hate hearing him rasp because he is pulling so much.
Also when we are out he has stopped listening to me. I can no longer get him to sit on a walk unless I have a treat in my hand let alone teaching heal and proper lead walking.
He has not been off lead yet with me, once with me and the trainer but he is uber confident outdoors (not like inside) that he can't hear me at all so I need to be able to get him to listen before I am willing to risk this!
Also it is a working dog trainer that I am using, one who had been recommended to me. Personally I think he is good despite not getting anywhere yet, but he is only 20 weeks and we have only had two sessions, and I think I am a slow learner!

Now on the other forum I was on it was mentioned to make sure the trainer is not too harsh, what is too harsh?
He has currently just calmed down and is sat on the arm of the sofa watching TV!
Thanks for any advice you can give