We do not use a chain on our coloured stallion. The only 'strong' tack we use is a double bridle. If the stallion has good respect for you then you should be ok.
Our stallion does thry to push his luck on occassion to see how far he can get but you just have to remind him - your the boss, things are done on your terms.
We have never had a problem with our stallion, I believe this is through good training not extensive 'strong' tack or equipment.
We also breed - he is lightly advertised at stud and also put to one of our mares. Again - a gentleman, even put to in hand in just a head collar - its all about training.
Hope this helps.