This is from the HM FAQ
We include all major poker tournaments which take place as part of a festival, together with special one-off events as well as recurring (regular daily, weekly or monthly) tournaments. The tournament buy-in is not a consideration. The most important thing is to get complete set of results (names of all players who cashed) for each event and we cannot upload single cashes/results.
Now it is usually up to the casino to report results to HM and unfortunately some casinos don't much care about reporting. Best advice I can give is to look at start at the
HM Venues page and refine your search to your area, look at each of the Venues and see who is/isn't reporting. As an example you can look at Turning Stone vs Mohegan Sun Pocono Downs, TS reports their events and MS does not.