Doing a bottom job is time consuming, but not very hard. I did 30' boat in 5 days. I removed all of the bottom paint down to the barrier coat and patched the damaged parts of the barrier coat. I spent a little less than $1K. It also allowed me to closely inspect my thru hulls and rudder up close. It's like working on your own car, you get an up close look at your vehicle and are intimately familier with it. Plus, you will take the time to do it right while the yard wants to get as many boats done in as little time as possible.