I was advised to do a lot of brick training, but with all the best intentions I never actually managed that much - I'm not sure in the end for a completer such as me it made much difference.
In a sprint distance race where the run only lasts for 20 minutes or so, staggering around for the first 10 minutes because you haven't done enough brick sessions to be able to run strongly off the bike would make a big difference. For an iron distance, 10 minutes out of 5 hours or so is a much smaller difference.
Barley Magna Carter Mrs Magna Carter MC not so Jr MC/Victor's friends x4 Mutineer Crew.. Rocket Legs, XLR8 and Cannon Ball Bobs Your Father & Bobs Your Grandfather Running Postie SA & Jordy Mr and Mrs Cougie Redstripe Nutty Nikki Fe eing Madness Mrs Cheggers & Cheggers Jnr Nurse Ratched Podds (after the swim if someone can give me a lift out there!) Paperman and Paperboy
If you turbo through the winter using bottle cages, practice not looking down (and remember to drink!). Then, by the time you get out on the road again, your hand should find the cage automatically.
I find it difficult to reach the rear cage. so I tend to use the front until I empty it, and then hold the empty bottle in my teeth while I switch the rear to the front. That manoevre takes a little more practice!