Here at the Canadian GP: Hamilton commented that you might see as many as 4 to 5 pit stops using the two extra sets os super soft sets allowed! He used one set up with a right rear flat during practice (he ran over carnage debris). Two red flags shortened P2 so everyone scrambled for the last few minutes to test the super soft tires. Fettle crashed hard in P1 but got back on track for P2 and ended second best for the day. Alonso was fastest by a hair. I think they were using Vettle as the rabbit since they were following him around the circuit all during the session.