Daylilies are much easier to hybridize than many plants.
You have Tetraploids and Diploids, you only can cross tets with tets and dips with dips.
If you don't know what you have just look at the database and it will show if it's a Tet or a dip.
I mark my crosses so I know what the parent plants are, if you get something great out of a cross you may want to use that same flower more.
You will get many different opinions on covering the flower with something to prevent contamination.
I don't worry about it at all, one year we had thousands of grasshoppers and we still didn't cover any pods. If the bee puts different pollen and it sets a bee pod, then maybe the bee will make a better flower than I could.
Just make sure you pick the seed pods before they crack wide open.
When you think they are getting close to ready squeeze one with your fingers and if it cracks, it's ready to be harvested.