I saw this too,and also another 2/3 coins been thrown , this is an absolute disgrace but unfortunately what i've come to expect as per previous visits to caravan park, i hope the rfl come down hard on the club , which hopefully when then inccur the club coming down hard on the fans .

Below is a link to the RL Operational Ruleshttps://www.therfl.co.uk/clientdocs/Operational%20Rules%20part%204.pdfrl
Extract below. Where I have used "..." it represents words I have removed. I don't think I have changed the meaning I was just hoping to make it easier to read with specific regard to the OP's post.
SECTION D1: OFFENCES, PENALTIES AND ENQUIRIES
OFFENCES OF MISCONDUCT
D1:10
Safety and/or Misconduct of Spectators
(a) Each Club is responsible for managing its Ground safely... In addition each Club is required to use its Best Endeavours to take all precautions necessary to ensure that... spectators and all persons purporting to be supporters present at its Ground do not act unlawfully and to prevent any of the above from... throwing missiles on the pitch. Any Club which fails to discharge its responsibility in this regard shall be guilty of misconduct.

Hedon isnt in Hull its a town in the east riding. Hull stops at Saltend!

Too true, leave Hedon alone