i think you can only habe 3 gamertags that will have xbox live sorry
I think you may have started a new thread rather than replying to the one you intended.
Did this solve your problem?
Sorry this didn't help.
Great! Thanks for marking this as the answer.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.
How satisfied are you with this response?
Thanks for your feedback.
Yes, you can only have 3 account's for Xbox Live Trial - But after that, you will not be able to get the Xbox Live Trial, You would have to pay for it :)
Hope this helps! :)