swb69 wrote:I know I am getting in a little late on this, but here's an idea. I would not try to do anything this year. As you said the stems under the pads get to be a real mess by this time of year. I grow lilies in a garden pond and by August my fish can hardly move through them without hitting the stems. If you want to keep a channel open, the best idea is to start in the spring just when the new pads surface. The stems from last year will be laying on the bottom. If you cut your channel then, and keep it open, it should be a little easier. The problem is that the pads grow extremely fast, and as you make room the pads you leave will spread out. You will have to go fishing and trim the pads weekly. I don't know if that is practical for you. Another Idea is to get as many people as you can to drive through the channels you want. The props should cut a narrow path, but again it has to be kept up. Personally I use heavy jigs to penetrate the pads or drag a frog or lizard across the top, letting it drop in between the pads. Yes it is frustrating to get hung up but the alternative is a lot of work.
You are right not to use any noticeable equipment. WA has very strict laws concerning lakes, rivers and such. WA considers water property of the state, so I would not do anything that would bring unwelcome attention. Also, habitat alteration is not looked on kindly by the state. I do not believe it would not be worth the risk. I can not see them questioning a "boat path" cut through the pads though, I've seen this on several lakes.
Finally, DO NOT, under any circumstances, use any type of pesticide in, on, or around the water. This would lead to huge fines and maybe even a stay at the "grey bar hotel". WA is more than strict about this. I know farmers and landscapers that have gotten themselves into serious trouble by spraying along waterways. It would be beyond foolish, for any reason, to try.
Just saw that you resurrected this one...
Ya, I am definitely not (that) concerned about seeing this idea through. I mean, I did a little hand trimming like I said, but no way am I about to get into herbacides, and power tools. When you mentioned boat props.... this is a little urban lake with no gas motor, no launch, etc.
Anyway.. I was just kind of was thinking out loud about ways around the issue.