pumpkin spice in my pumpkin ale

[seckert]

so I am making a pumpkin ale this weekend. I have read about so many different ways to put pumpkin spices in this. in the boil/secondary, also way different amounts, and different times as well. I am looking for insight as to which technique will have what effect on the beer. also if I don't have enough during boil could I just add some into fermentor? I am not a big secondary fan so I am trying to steer away from that. any info would be great!