If you are not already a member of Tripoli Rocketry Association, then you must first apply for membership with them. This will give you the insurance allowing you to fly HPR at any Tripoli sanctioned event.
You can apply for membership online via the Tripoli US website, or by fax/mail. Major credit cards are accepted.
When you have you membership card and number, or if you are already a member, then you can proceed to step 2.
Simply send an email to prefect @ tripoli.org.uk stating that you wish to join Tripoli UK, including your name and TRA membership number.
Annual Membership costs £10, payable in advance on 1st January. For those joining after 1st July, the fee is reduced to £5 for the part-year to 31st December.