Jody help! I’ve tried a few of yours and other people’s power nap vids 
As far as I can remember, always the same - I fall asleep (mostly a lil conscious of the binaural the whole time) sometimes dreamin a bit and always wake up at the end with them when they bring you out. I feel foggy, groggy, dopey and dizzy when I stand up. basically rough, and wanna keep sleepin or just watching u tube cos I feel tired wasted. If I get up and try to get on with stuff I just keep feeling tired  and slow for a good few hours at least, often (but not always) I’m just like that till  I go to sleep that night 
What am I doing wrong?
I've got a video with a few power napping tips: http://bit.ly/powernap-educational
I'd suggest trying a 15-minute or 20-minute nap; 30 minutes might just be too long.
RLd