I did the Twin many years ago and I still have an old Frog Hotspur in The Loft......
Bit like this perhaps?
Pretty much EXACTLY like that, except mine has a vestigial Y-shaped tow-line attached to each fuselage.
It was even moulded in that bilious yellow styrene so beloved of Frog at the period, almost everything they did was in yellow, perhaps it cost less as raw material just because it was such a bizarre colour?