triathlon with insulin pump

I competed in a triathlon last weekend with a friend who has Type 1 diabetes. She wears a Minimed Paradigm insulin pump. She couldn't wear it during the swim because it is not waterproof, and was hesitant to leave it in the transition area to re-attach for the bike and run. She took insulin by syringe and did not use her pump at all that day. How do other diabetics, particularly those who usually wear an insulin pump, deal with managing their diabetes during a triathlon?