One way to avoid sticking is to grill salmon fillets, flesh side down first, for about 70 percent of the total cooking time.
Step 2:
Roll the fillets over with tongs when the flesh releases easily from the cooking grate. Finish cooking them for the remaining 30 percent of the cooking time.
Step 3:
Slide a spatula between the flesh and skin to scoop the fillets (without the skin) off the cooking grate.