Same here! All mine come with the combs as well. So far, I have never used adhesive on my LF, but a new one I just ordered may require a tiny bit of tape, since it is a different style and texture. Usually, I just use one bobby pin on each side (posted at each side burn to secure). The back is a stretch adjustable band, and its a slanted bob style, so the back doesn't matter. I find that the combs hurt like the dickens when I try to secure them into my hair. They just pull too hard on my hair right at the scalp, and I can't stand it.
Underneath my LF, I keep my hair in box-braids or cornrows. I can't cornrow my own hair, so I usually do box-braids or plaits to keep my hair tamed underneath. I apply Sulfur 8 Oil for Locs, Twists, & Braids to my scalp and edges. I mist my hair with water if it's dry (hasn't just been washed and rebraided while damp). Then, I put some Amla Oil and Vatika Oil over a shea butter conditioning cream to seal. My hair and scalp stay lubricated/moisturized the whole week or longer.
I don't touch my hair for sometimes (4) weeks at a time, besides just re-moisturizing.
I don't wear my LF 24/7. Only if I am going out of my house do I put it on. If I'm inside, that bad boy is OFF and I have on a satin scarf, lol. The wig caps resembling stocking caps itch like crazy around my edges, and I choose to wear one that's stretch mesh instead. That way, my scalp can breathe a little more. As with the wig, the cap is only on with it and when going out. My hair is very thick as well, and if the style I'm currently wearing wasn't the way it is, my hair would be kinda bulky underneath, but I try to make my braids as small as is feasible. But then, it has some lenth, so when I pin them up, its still a bit thick. I need to get some small cornrows next time. Like another poster said, I too can be lazy and don't like styling every morning to look presentable, so LF's and wigs have become a go-to for me. Pretty much weaves in general...where I can give my hair a break and still look good. Also, so I can get to my hair if needed (this is why I avoid getting braided extensions, cuz I wanna take my hair down too soon to DC).
I've gotten good growth, and I wear one style for a couple weeks to a month at a time. Then, I switch it up with a new one or another in the stash. That's the lovely thing about being a woman...you can change your look as often as you change your mind!
ETA: I would like to learn that bandage method another user posted. Also, a friend told me how she does a similar thing using a wig cap and a mannequin head. She glues her tracks on and creates her own wig. She creates it in a quick-weave like method, but it looks so nice.