Yeah, totally. The grain size and shape of the sand change the beach slope, which is the main thing that tells a wave how to break. Fine, smooth sand lets the wave travel farther before it hits the bottom, so it usually spills or forms a long whitecap. Coarser, gritty sand makes the bottom steeper, so the wave breaks earlier and often in a sharper, more violent way. The sand’s composition also affects how quickly the sand moves, so the profile keeps changing and the wave pattern can shift a lot over just a few days. It’s like tweaking the board’s deck—small changes can make a big difference in how you ride the wave.