package dev.o7moon.openboatutils.mixin;
...

@Mixin(BoatEntity.class)
public abstract class BoatMixin implements GetStepHeight {
...
  
  @Redirect(method = "getNearbySlipperiness", at = @At(value="INVOKE",target="Lnet/minecraft/block/Block;getSlipperiness()F"))
  float getFriction(Block block) {
      if (!OpenBoatUtils.enabled) return block.getSlipperiness();
      return OpenBoatUtils.getBlockSlipperiness(Registries.BLOCK.getId(block).toString());
  }
...
}