I'm doing my first (sprint) triathlon on Sunday at Dorney Lake. I'm a strong swimmer, and have done some open water swimming and felt fine in just my trisuit, but worried I might be losing a competitive advantage without one, or the lake will be a good 5 degrees colder than i'm used to (air temp is forecast to be about 15 deg). Being from the north of Scotland I'm pretty good in chilly water, especially if it's only for 15 mins?
Any tips on last minute wetsuit hire or any chilly issues I'll face towards the end of the swim?
Can't decide whether to bite the bullet and rent or just risk it - also don't want anything too thick that'll impede my stroke.
Advice much appreciated!