Simplest method to flag power spikes is –
- XO, Activities, Table
- Edit Columns, enable Max Power
- Sort by Max Power column
- Tick the entries you want to flag, then select the Flag button in upper right.
“Fitness signatures being updated.” will appear. That will take a while dependent upon amount of historical data on file.
When finished if you want to further adjust your signature, there is a way to do that, but how many watts are you talking about?
Are you estimating your PP based on actual watts hit during an outdoor sprint? Or the theoretical value calculated during a 5 sec sprint effort while fatigued?