I think that if you guys are suffering from frost then the best position for yourselves would be to use cold water pebbles with a coarse size head to shock the frost, then use an ice king for a scrape.  This will usually lift the frost and also brighten up your rinks.  If you guys need to do this at the end of the night because you wont have time the following morning then try increasing the ice temperature over night to help since you have no heating. The best dehumidifier you have is your ice, try to use it best you can. In respect to your water to solve the grease problem, bearing in mind money always plays a part, I think you could start with the cheapest option of a small D.I cylinder just for you pebble water alone.  This would be very helpful when changing over and would give a great benefit to your game ice.

Ice Ice Baby  as I said before I am not there to use the iceking to scrape at the time it needs to be done ( you know that    ).

ROFPML   ,  SJK  I think you have misread my posts , it clearly states I am the only one who has used an ice king. I also stated that at the only available times in which we can scrape I am not there at the rink due to my schedule and other commitments. I know IIB was offering good sound advice and my last comment had a wink on it , surely that gave the game away that I knew he was giving good friendly advice but the cheeky monkey knows my situation. SJK I think you got the wrong end of the stick here ( or is it a curling cue ) I apologise if I had not made it clear enough in previous posts , afterall I may come to your goodself for advice one day.

Wee Eddie   in one of my previous posts I said  until time  I get a chance to show the guys it won't be used. Due to my schedule and other work commitments I am not available to show them at the only available time  when we have time to do such things. You are right though if I'm not there the other guys should be able to do it but like I said they don't know how to at the moment.