We have 2 cheats and tips on iPhone. If you have any cheats or tips for Asterix: Megaslap please send them in here. You can also ask your question on our Asterix: Megaslap Questions & Answers page.
For a minor additional that will provide you with extra distance you can hire the god Toutatis to deal with the Roman when he lands.
Experiment with the various incentive items to discover which ones give you the best results.