Late to the post but gonna add my two cents anyway for anyone who comes across this in the future. Like stated above, it's preceptor specific, but it's safe to just practice both. One preceptor I worked with had me purely doing instrument times. Worked with their partner for 3 days and was asked to do hand ties on day 2. This was week 4 or 5 of my rotation, and I had stopped practicing my hand ties in week 1. Surgeon mildly chewed me out stating "this is your surgery rotation, not EM or ortho." Yeah instrument ties save suture, but according to the doc and the FA, hand ties are faster (once you're good at them). This is the video I used to relearn my single hand ties