i think star tries the baby carry thing the first time he asks her to fly him somewhere, but robin gets too embarrassed so they later trapeze hold, except they dont have hands and its weird. but the next alternative would be robin riding on her back and thats vaguely unplatonic so its Not An Option for these Best Friends™
>>2381783
ofc eventually robin just straight up snuggles her back midair like the useless lovesick horse he is