A general film industry rule of thumb is that everything has to be multiplied by three when it comes to filming in water; jobs that take one person one day and cost £100 on dry land will take three people three days and cost £300 when you try to do them in water
![Over budget and under water?](http://jguinnpromotion.com/wp-content/uploads/2016/07/img-35-770x326.jpg)