Water pump composite blade distintigration

[boxzilla]

This past weekend I removed my 2001 Boxster water pump to replace it. Read as much as I could from here and around the web. Like others, found that much of the existing blade had worn away. Checked the openings i could reach (where the old pump came off) and checked inside the removed thermostat to see if I could retrieve any blade particles. Found nothing.

What I did not read, was what to do if presented with this situation. I drained all my coolant fluids and there may be particles at the bottom of the pan but too small to notice.
My question for anyone who has done this procedure....were you able to find any blade particles? Did you just proceed to bolt the new fan/thermostat on and move forward? Is there a step I should do before buttoning everything back up?

thanking the community for your feedback....it takes a village (and some big bucks!)