Just to make it clear : You're free to do what you want with the raid boss you found.
Just don't waste bosses that someone shares with you.

Also, as sora said, seed bearers now last 24h, no need to rush it :P

If you want to hit a boss many times (to clear the daily quest), just use 1 2*

Oh, I haven't seen a Seed Bearer recently, so didn't know about the 24h thing.

Usually I only use 1 Raid Point everytime I attack a Boss because I use them to complete the Daily quests = 3 times 1 RP = count as 3 for the Quest even if you fight the same Boss several times.
I have seen only 1 time the Seed Bearer, and I was the one who found him.

This is very useful info. Thanks a lot! I had absolutely no idea about this. Was just wasting my raid points ='(