Ready for Swim Team? I get a lot of parents asking me when I think their child will be ready to join the JMSS Marlin developmental swim team. The team practices on Tuesday, Wednesday, Thursday evenings 6 - 7 pm and Saturdays 8:30 - 9:30 am in the 25 yard course "big" pool. The first thing I ask is what level of swim class is their swimmer currently in.