Mostly, Byleth is just happy he gets to hold his hand. As he's looking over the equipment, his eyes trace the shape of the surfboard.

"It does seem like it might be easier... I think I'll go with that." Getting ready is kind of a to-do, but Byleth manages getting all ready to the best of his ability. Naturally he hovers near Dimitri, watching to see if the markedly clumsier man needs his help with anything. He greets the Gyrados as they come near with gentle pets and a soft voice. By now, he's familiar with most of Dimitri's pokemon, and knows nearly all of them by name. His penchant for keeping track of things paying off when it comes to pokemon-rapport, perhaps. Also it probably helps that he just adores all pokemon to begin with. They're wonderful creatures and friends.