Yes it’s a very good idea, however I feel once I’ve got a tup that I know is fertile and is decent then id probably rather the no stress buying another tup for a few years instead of having to buy And sell a tup every time aswell as disease risk. But it is a good option to haveCould you buy a top class ram lamb, each year, either texel or lleyn, select the best ewe lambs to retain in your flock, sell your top class year old ram, proven fertile, with the aim of breaking even or a slight profit to purchase your next top class lamb and continue improving your flock