If you're a FORC member you can help at all trail days. If not, some land managers provide general volunteer waivers which would cover that specific property. RICFPD has made general volunteer waivers available to us (valid at Illiniwek & Dorrance) but I'm not sure about the other land managers. Like you said, we don't want to turn down any help since we struggle to find it in the first place. Trail stewards at each property would need to have park specific waivers on hand for non-FORC members if they wish to participate. Our club insurance policy only allows paying members to participate under our coverage.