DoubleDigit.....

I really like these drain products and have two of them.
Well made, relatively cheap, and last forever
Agri Drain Cones

Fingerlings might be able to slip thru the cones, but if you go too small you may have small debris clogging issues.

If you never have debris clogging issues I suppose you could consider this as well.
But be careful with screens, because if it gets clogged, that water is going elsewhere!
Agri Drain drain screens