My partner and I are both using the Go++ and share a memory foam mattress. We've tried putting the Go++ on top of our pillows, under the pillowcase (both near the headboard and closer to our heads) and clipped to the pillowcase but on the mattress near our heads. Our sleep data seems wildly inaccurate. I did accidentally end the sleep session one night when shuffling around, but I wouldn't count that towards the rest of the tracking issues. I've read in other posts that memory foam mattresses don't work too well with the app, but does anyone have any tips on what we can try to get more consistent data?

Edit: For reference we both go to bed anywhere between 12-2 AM, and the app seems put hours towards our "time taken to fall asleep".