Store nades on the shoulder slots. Only takes 3 TUs to get them in hand. And only prime proxies; they don't have a timer.
Another nade tactic is relaying them to the front. Prime the nade and throw to the advance scout. He uses 25% + the TUs to pick it up. Much better than 75%+ TUs gone for your front line guys.
Large rocket = poor man's blaster bomb. Bring at least 8. :Titan: