I've gained so much from reading your conversations on this forum! You've all emboldened me -- after weeks of mulling it over and eyeing my sleeping bag, I bought tickets for my first trip to Isle Royale! I'm going into and out of Rock Harbor, Sep 12-19.
I was wondering if I could solicit some advice from anyone who has time. Some context: This will be a solo trip, and I'm not a super experienced backpacker. I've only done one solo trip, for a single night. And I've done several multiple-night backpacking trips, all in Harriman state park, and all hiking very short (5 mile) distances. Harriman has some tricky, steep trails, but these were not endurance experiences. On the other hand, I'm a moderately experienced camper in general. I've slept probably 100 nights at Agawa Bay.
Some context about fitness and equipment: I'm 30, in decent shape. I have a chronic lumbar disc issue, but my pack is really comfy and I think I might manage to get my bag's starting weight below 30 lbs. (I weigh 120.) Also, every backpacking trip of my life has, strangely, left my back feeling better. (Maybe the desk job is the problem.) I have a gore-tex raincoat and I just scored some Cabela's rain pants at goodwill! My hiking boots are very supportive but I hate clunky boots, so I'm bringing my awesome 15-year-old tennis shoes as well. My sleeping bag is down, EN rated down to 32 F ... but I've struggled to keep warm on 50 F nights in this bag. So staying warm on Isle Royale will be an issue for me. I'm considering bringing a small down quilt as well.
So! Given all that, here's my plan for the 7 nights on the island. I suspect it is too conservative, and I'd love feedback on this. Spend first night at Three Mile. From there, make my way to Moskey Basin, where I'll stay for a few nights before heading on to Lake Richie. From here, head back along roughly the same route, taking several days to get back to Rock Harbor. Notice the two really disappointing things about this itinerary: 1) I never once even approach the spine of the island, so I'm missing out on some different views and some different biology (apparently a flower endemic to Isle Royale grows at Mt. Franklin!). I also really am drawn to Lane Cove so I'd be sad to miss it. 2) I'm retracing my steps. This conservatism is all in the name of not getting lost, and not getting fatigued and spraining an ankle. Opinions?
Other things I'd love advice about:
1) I made a frustum-shaped windscreen for my canister stove (MSR pocket rocket). Tested it out on a sunny day to ensure that the canister stayed cool enough to touch, so I think it's safe. I haven't determined the fuel savings this will give me, so I'm pretending it won't help at all. From reading others' advice on this forum, it seems in windy conditions I can expect to boil 0.6L of water per ounce (mass, not volume). I'm having hot breakfasts, a cup of tea a day, and hot dinners, all the just-add-boiling-water style. I'm also planning for one extra day of meals. After doing some math, I'm bringing two 8-ounce canisters of fuel! I know I'll have lots left over, but the question again is: is my conservatism going too far here?
2) I have had only great experiences with my water filter (a katadyn hiker pro). When I go backpacking, I bring this filter and some chlorine tablets in case the filter fails. But in the case of IR, my chlorine tablets won't be very helpful -- I've read on this forum that the island has a parasite that isn't killed by chemical means. Does anyone have thoughts on this? I have a new replacement cartridge for my filter; should I bring that? Or should I just plan on boiling water in case my filter fails?
3) To help me sleep at night: anyone want to throw out reassuring stories about rutting moose bulls NOT trampling people?
4) I love solo canoeing and kayaking. I'm a little unclear on whether rentals are available on the island this late in the year?
5) Regarding electrical storms: if I'm staying away from the ridge, how concerned should I be about lightning? Is my main concern going to be falling trees? I'd love to hear thoughts on this...
6) I'm a biologist, and I'm wondering if anyone knows details about resident biologists on the island. Any of them working on the Rock Harbor side? Do you think they'd be willing to chat?
7) Does anyone know if Founder's makes dehydrated beer?

Thanks in advance, everyone! When I get back I'll try to post a detailed report! I will also try to keep notes about the exact amount of water I end up boiling, and I'll weigh my canisters when I get home. Maybe that will help others decide if this type of windscreen is worth it.