Problem
A gym, Feel the Burn, has recently been renovated with a significant amount of new workout equipment. Four new Super Elliptical Trainers (SETs) have proven particularly popular. They are so popular that gym patrons are complaining about the difficulty of getting on the machines. Currently, there is a sign-up board for each machine that can hold up to three names. Gym users are only allowed to sign up for one machine and must come to the gym to do so. Gym patrons frequently complain that they are not able to sign up for a machine. They also complain about long waits once they get on the sign-up board. Once a gym patron gets on a machine, he or she works out anywhere between 15 and 70 minutes. The average user does a 30-minute work out on themachine.
No additional SETs can be added to the gym; provide four suggestions to improve the situation and explain why these suggestions should work and what problem they alleviate.