I have a total of two years experience as a mechanic. At all of the shops I have worked at in the past, all of the more experienced guys have not used the masterlink, and instead used the pin. So, I just got a part time job at a shop to supplement my income, and I did a new chain on a bike. I did not use the masterlink. After the customer picked up the bike, the head mechanic found the masterlink package on my bench and asked why i didnt use it. He said that the chains with a masterlink(isnt that practically of of them), you must use the masterlink. This is news to me, but I could possibly be wrong. Whats your take on it? Even on my last bike, I didnt use a masterlink, and I never had any problems.
BTW this was a cheap chain on a cheap bike with cheap components, not a $6000 road bike or anything hahaha