I have searched this up but was only able to find people trying to calculate how much backing to mainline. I’d like to spool as much braid on my spool as possible and am wondering how much mono backing is needed to prevent slipping. Is just one layer enough? 

Depending on how much line your reel holds, usually about 1/2 of the spool filled with backing.

2 minutes ago, Hammer 4 said:

Depending on how much line your reel holds, usually about 1/2 of the spool filled with backing.

1/2 the spool? I think you might have read my question wrong as I am not trying to save line. I just simply want to put the least amount of backing that I can without the braid slipping. I don’t think I need to fill 1/2 my spool. I have heard 30 feet is enough. Does this sound correct?

You should have enough backing so the braid doesn't slip onto the spool, so maybe 30' would work. Sorry, most asking about backing are usually trying to save $$$ on braid..

3 minutes ago, Hammer 4 said:

You should have enough backing so the braid doesn't slip onto the spool, so maybe 30' would work. Sorry, most asking about backing are usually trying to save $$$ on braid..

Thank you very much. It is absolute okay, that is the reason why I started a topic to find answers because all I could find was answers to people trying to save their line. I use my line on baitcasting reels until I don’t have enough to make cast so I like to put the least amount of backing possible. I am just worried that I didn’t put enough on my reel. 

Not much. If you have tied/anchored the mono backing to the spool (arbor knot, etc.), it shouldn't take much wrapping to get the mono to cinch on the spool. I'd agree with the 30 ft. you mention. For a standard 7:1 reel with about 31" IPT, that would translate to a dozen turns of the reel handle. I would think that should be plenty. I'd personally probably do just enough turns to get a nice even base layer down without being able to see the spool arbor through it.

None, tie to spool add tape. This completely stop braid slippage for me.

If the reel spool has holes tie through the holes and you don't need any backing. No holes then 1 wrap of tape works.

Tom 

20 to 30' of mono is my standard for braid backing

Like other have said a few wraps of mono should be enough but if you use some kind of tape, you need none. I use plumber silicone tape (bought 10 packs), I also use this tape to cover connection knot if needed.

Like the OP said I try to do this with backing too. Just enough to keep the braid on without adding too much backing. I think i put too much on my Shimano but I dont want to unspool the whole thing to cut some of the mono off. 

23 hours ago, WRB said:

If the reel spool has holes tie through the holes and you don't need any backing. No holes then 1 wrap of tape works.

Tom 

This.  Technically, you don't don't need any

Just tie around the spool and lay down enough backing to cover your knot good so the main line lays nice and even.  That is all that is needed if you are just backing to prevent slippage.

 

A surprisingly small amount of backing will prevent braid from rolling on the arbor.

Even so, I'll continue to add cheap backing until there's only room for about 50 yds of braid.

A 50-yard top-shot is enough to handle any freshwater species, and is inexpensive to replace.

 

Roger

I usually fill the spool 60-75% with mono. I can spool 4 reels with mono backing and top off with a 150yd spool of braid. You won't be able to fill 2 reels not using backing. Simple money saving for me.

I don't use any backing and I know some will hate/doubt whenever the word "never" is used, but I never have slippage. I DO put electrical tape once around the spool first.  And yes I have caught big bass..lol