Not a dumb question at all, possibly some dumb responses such as mine..
I would not be worried at all about an issue from the DEC, actually if they were to observe you it would be easily recognized as fly fishing.
So here are my thoughts :
It's all about the time when it would be effective.. I base that on water temps and how long a fish has been in the river..
It is and would be effective towards late march through drop back season.. You all know my feelings as to why the SRS is effective.. In the spring (anywhere from late march -April ) the salmon smolts and fry are in the system, steelhead key on this as it will provide a much larger substance then say a caddis larva..
Also water temp plays a role, Now when the temps are still up, the fish are more actively moving and not just hunkering or moving when necessary.. Downside to this time such as now, is that thy are keying in on salmon eggs so your competing with the natural food source.
I find it very hard to get a fish to move very far to "chase" food down during the lethargic times from late November -mid march.. Typically they are wintering over and using fat reserves or feeding tight to the bottom on insect life..
This is all just some B.S. through my observations..