>>533246Small Handsaws are great for out. I don't know for sure, but in some cases these may actually be lighter than bowsaws or even folding saws of similar size. Anyway, they are stronger and more comfortable to use.
If you think the handle is too heavy or too weak, you can easily build a new one. If it doesn't fit into your backpack, you can shorten the blade. If you want to go ultralight, remove some metal from the top. You're not making precision cuts in the woods.