To teach your Otterhound tricks, even simple ones, you should have in hand some small snacks, go to a remote suitable place and always keep the instruction sessions to under 15 minutes or your Otterhound will start to get tired. Take note that when he gets something right offer him lots of appreciation and a reward treat, yet beware not to get him excessively thrilled or he could lose focus.
Teach your Otterhound to offer you his paw
To get your Otterhound to give you his paw, first