Yes, you can. You have the right to get in and out of the water as you please during your session.  

If you hire a foam board you can try out different sizes and models during your session.  

If you hire a resin board you cannot change resin boards (unless you hire more than one), you can however swap with a foam board. 

We remind you that only foam boards are accepted in Rookie, Trainee and Cruiser and are strongly recommended in Intermediate Cruiser.