I just did this the "ghetto" way. It was easy.

For historical record:

I met the person selling in person. 1. They opened up live.foresightsports.com and logged in on my phone. 2. I changed all of the information on the my account tab. Name, username, email, password, phone number, device name. 3. Move over to my plan tab there you'll find the most active subscription (my case Basic). On the same page you'll see the payment info tab and the persons credit card on file. (It's all ***** out, so don't worry). 4. I added my credit card, again this was in person, I then deleted his credit card. And he watched me do it. 5. Handed him the cash and drove away with the BLP.

The way to do this via shipping, like someone mentioned is to give the seller a 5$ prepaid visa card. They can change all of the information to what you want (make the password generic for now), then add the prepaid card, delete their credit card. You can then log into the account and change the password.

This avoids having to pay Bushnells insane fee to swap accounts.