One thing Mr. G has suggested (although I've had ZERO time to test out) is to try weighting the hair as an accessory.  Apparently if you do this the shoulder and neck weights won't then be an issue.  You will still need the correct physics maps, but you'd need those anyway.

So you might give that a shot.  If it doesn't work for you, post again here and I'll see if I can eek out the time to give it a try myself.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

Thanks, Mike, for your quick response. I found the video you posted on weighting the hair as an accessory and then transferring the skin weights to 'other' and have tried that. I'm a rookie so it could be that I'm missing something really simple in the process. The physics maps may be what are escaping me?

Thanks again for the help you provide. It is appreciated.

Yeah, I just put on a simple physics map (you need to put it on ALL the hair except for the skullcap) and it worked fine. 

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

Cheers Mike. You done a stellar job with this. Of course I missed the weight map before I set it to an accessory.

If we cross paths, I owe you a drink.

P.S. That's a lovely kitten purr.

Well, we both owe a drink to Mr. G, who found this out.

(And, yes, Julie has a great purr -- she likes to help :>.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

It must be a sign, our character that you just helped us fix up is called Julie. Have a pleasant day.

Hair this long is always going to be an issue -- it's much like capes (which we've discussed, even on this thread).  Your luck will largely depend on how the hair is designed and how good you are with weight maps/collision shapes/etc.

What I would suggest is this -- start with MUCH shorter hair until you get to be an expert.  Using this hair would require at least someone well versed in iClone (say at least six months -- I know *I* wouldn't try it and I've been doing iClone for years).

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

There are weight map tutorials, and I have at least two on my channel.  Clothes and hair (and accessory) weight maps all work the same, with the same principles involved in each.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley