Hi snakecatcher, as a senior first aider, & someone who has also been hit with marine venom, I can say with all certainty that, yes, hot water , as hot as you can stand is THE BEST REMEDY for all venomous fish injuries.
If hot water is not an option, then go with the ice , its not as good but does help, had to give a bloke a frozen mullet once after he grabbed an eel-tailed cattie to take the hook out & it twisted in his hand.
I have been hit not only 1 time, but in both feet on separate occasions by dogfish (blue catfish), the first time needing hospital.
If I was in the boat & copped a bad hit, with no ice or hot water,I'd just go home.
However , beer as a short-stop sounds good to me!!!!!
Muzz