I made a strawberry cider, that is still in the carboy. My thoughts are I want the most flavor and aroma from the fruit that I can get. I have made fruit wines in the past and always add more fruit to the secondary.
On my strawberry cider, I added sugar to bump up the abv, but did NOT add any strawberries. I then pitched the yeast and let it ferment for a couple weeks. Then I racked it off the initial lees, and onto the strawberries that were frozen, thawed and pulverized with a stick blender. No added chemicals.
I let this continue to ferment until the strawberry must looked like it had given up all it had. I racked it again off these lees and it is still finishing the fermentation process. When I racked it, the strawberry aroma was fantastic.
There is really no right or wrong way to do it. It is all personal preference. This is they way I did it, and so far I am liking the results.
BTW, I plan on back sweetening it if it is needed. Then possibly priming sugar and bottle it. Once the carb level is where I want it. I will heat pasteurize the bottles.
Good Luck.