They should do their own homework. There is no clear solution yet that is reproducible in a simple way. Study and follow this forum, do a proper patent application landscape and pick a few candidates that have fairly robust data presented.
I believe TG were accused of that after their Nature paper came out. Turns out they did do their homework in prepping for their deep dive into LENR, culminating in the Nature paper, as Matt explained last night. Another critique was that they had not tapped into the old guard for help, but that was laid to rest last night also.
Akito Takahashi's approach is also promising but using materials in powder form will probably not be suitable for real commercial applications due to the too high risks of sintering of the active metals
Yes, this is promising, but TG heavily explored powders also, and did not see any anomalous effects.
BTW: Did anyone catch Trevithick's last comment about this possibly being a "quantum effect"? I found that interesting, and wonder if he has plans to explore that further. He and Google are investing in quantum computing, so if anyone would see a connection, it would be them.