Read about the Parachute rice planting from the Kerala agriculture magazine 'Kerala Karshakan' 2019 January issue. Later saw this in Mathrubhoomi agriculture news and when searched in youtube, there were more videos about this, was surprised to find this.
Basically seeds are germinated in trays filled with manure and soil, then 12-15 old seedlings are pulled out from tray and thrown across the field. The field is prepared in conventional manner by tilling and puddling and made muddy. The seedlings land with base and may be lying in the filed, but later gets up.
Planting in line also is possible and can be used for SRI planting.
https://www.youtube.com/watch?v=u6p44zjuEcg - Parachute paddy cultivation in Srilanka
https://www.youtube.com/watch?v=0_BT3E3JlnI - How to planting rice parachute