I am having quite a bit of difficulty removing the nut from the drain of my fiberglass shower drain. The shower is located on the second story. I can access the underneath from the floor below due to a drop ceiling. The nut refuses to budge. It is a tight space. Can't get a good handle on it. Need advice

I am having quite a bit of difficulty removing the nut from the drain of my fiberglass shower drain. The shower is located on the second story. I can access the underneath from the floor below due to a drop ceiling. The nut refuses to budge. It is a tight space. Can't get a good handle on it. Need advice

You have options,
1) Cut the nut with a mini saw.
2)Take a hammer and chisel and start the nut turningcounterclockwise
**or**
3) Purchase a adjustable spud wrench.(see image) and put that om the nut and turn it off
One of the above should work. Good luck, Tom