You re-spool and just before you get the "just right" amount of line on the reel, the line spool is empty.  >

I never have that problem. I will respool twice (max) on a line spool then I'll lose it or I'll move on to a different type of line.  ;D I'm too loose with my tackle money haha

I realized the one thing that really trips my trigger: when the fish start biting a certain color/type of soft bait, then I run out. That's ok, now I just make sure I buy at least 2 of everything  

Buy it in bulk and it will happen less.  

lol  yea but it costs more money

Yes.

Or when you take the spool that you put some old line on to reuse and find out that there is not enough line on it so you have to spool it back onto the spool from the reel, again.

I need a yard counter when spooling my reels.

It costs more initially, but IF YOU USE IT, it will save you a bunch of money in the long run.  Just think about how many spools of line you have that you bought 300 yards and only could use 250 yards of it.  If you bought a 2000-3000 yard spool you would not have the extra left overs but maybe one time.  

Another thing to think about with bulk spools is that they tend to have less memory since they are spun on larger diameter spools thus fewer wraps per yard.

Use a backing line; re-tie to it insead of removing the entire spool of line. I usually pull off old line until it's about a cast & a half off, then tie on the fresh line to the old and reel up. Saves a lot of $$ and even with a "filler" spool, you can get two or more refreshes.

I don't count that as a problem, if it ends right at the perfect moment or close, that's just perfect timing.  Usually I have extra line, which if it's not enough for another reel, I'll use it for leaders or drop shot lines.

Here, I went over how to measure out for braid with backing, so I'll cut-n-paste how to divide up spools, and measure backing, so you get the most out of them.

Things you will need/want: $10 clip on line counter. Spool of cheap mono. Spool of braid you will be using. If desired, 2 empty line spools are real handy. Also, a line spooling station is real handy too.

1) Tape braided line to your reel spool. With the line counter, put on desired amount of braid.

2) Tie on same size (DIAMETER) mono for best results, but other size mono will work. I use 12lb XT mono, becouse I have a spool of it, and don't like the "new" line. It is now backing line.

Fill the spool to the proper amount over all. As you fill the spool with mono, measure the amount of mono you put on and remember that amount for the future.

3) Strip the line back off the spool onto an empty or any spool.

4) Transfer the line onto yet another spool, so the mono is on the outside.

5) Spool the reel and go fishing.

The backing should last a few years, but it's a good idea to make note of the backing length for other same size spools, and also, so you don't have to go through the line transfer process again.

Side note: 225 yard spools can be divided up 110x2 or 70x3. 300 yards spools can be divided 140-145x2 or 95x3 or 70x4, and so on, I'm sure you get the math part.... The mush at the bottom of the spool is best cut off IMO, that is why the lengths come up short.

Line is getting expensive, anything someone can do to get the most out of a spool will help in the long run. It would be nice to justify the investment of larger spools, but, for me at least, the value isn't there yet. While I have settled on diameters/test strengths for most set ups, I'm still searching for the type and brand of line I want to stick with. Even then, I'm frugal enough I'll probably still divide up the larger spools.  

i agree with crestliner, it has saved me money and probably fish