GM3 on Water

    @EventHandler
    public void onMovePlayer(PlayerMoveEvent e){

        Player p = e.getPlayer();

        if(p.getLocation().getBlock().getRelative(0, -1, 0).getType() == Material.STAINED_CLAY){
            p.getLocation().getBlock().getRelative(0, -1, 0).setType(Material.AIR);
        }

        if(p.getLocation().getBlock().getType() == Material.WATER || p.getLocation().getBlock().getType() == Material.STATIONARY_WATER){
            Bukkit.runTaskLater(Plugin, new Runnable(){
                public void run(){
                    p.setGameMode(GameMode.SPECTATOR);
                }
            },20);

        }
    }