Forum:How can Luffy move? Ep144

In episode 144: The Caught Log! King of Salvagers, Masira! The crew investigate wreck that fell form the sky and then sank. Usopp creates diving suits from barrels for Sanji, Zoro and Luffy. Now Luffy's suit is made from two barrels instead of just one like those for Sanji and Zoro, but still his feet stick out and are exposed to the sea water. Shouldn't he be unable to move at that point because of his devil-fruit power?