Securing back to Wall pan to floor

[TargetDummy]

Just replaced a wall hung toilet and frame with a back to Wall toilet and a new slimline furniture unit. Everything went to plan and no leaks.

Last job is to secure pan to floor using the plastic 'L brackets' supplied with the toilet. I'd normally drill through the floor tiles and secure brackets with screws BUT, I know there is a electric heating element where the screws will be.

So, what's the best way to secure without drilling?

 

[just pumps]

Glue 2 pieces of 3"x2" wood to the floor as replacement brackets.

 

[kidgreen61]

Glue 2 pieces of 3"x2" wood to the floor as replacement brackets.

It won't go anywhere when it's silicone down.