There was a company in the UK called love air which had 2 jetstreams for that very task.
There Regs were LOVA and LOVB.
There is another club which is the 100ft club which has a much lower number of members. A sexual act at 100ft agl or below. Not a member myself but I do know a couple of members one is a member of the 50ft club it must have been a high pressure day with the sea like glass when it occured. You really need to be a single crew freighter pilot to be able to join.