Weighing turkeys (and other poultry)

So, with the turkeys I have this year I've been weighing them weekly in order to track their growth rates, and so I can predict when to slaughter them (or at least how big they'll likely be when slaughter day arrives).  The BBB and BBW actually will stand still (more or less) so we could get a reasonable weight on them with a kitchen scale.  The Bourbon Reds are also actually pretty easy to get weights on as well with that scale.  

However, the capacity of that scale is only 11lbs.  My biggest BBB was 10lbs 10oz a couple days ago, and with weekly weight gains above 2lbs for the bigger ones, clearly that kitchen scale won't work by next week.  I have a fish scale that's good to 50lbs, but that requires picking up the item to be weighed with the hooked end.  It would be great for weighing a dead turkey, but I don't want those turkeys to die just yet.  And getting them into a container of some sort I can lift with the scale has been difficult.  Admittedly I only tried something like an Easter basket when they were still pretty small.

We have a bathroom scale that we can weigh whoever is going to hold them and then subtract that person's weight.  But that probably isn't as precise, and I definitely don't trust that scale as much as some others.

I'd rather not buy something just for this purpose.  So if you have any suggestions on how to get the fish scale to work or some other method of getting a good, accurate weight on live turkeys I'd love to hear it.

I've always done the bathroom scale thing. It was dead on with a lot of our birds.

How about putting them in a cloth bag?  If you get them in there, it'll keep their wings up against the body when you hold the handles, which hopefully will keep them calm while you hang them on the scale.

For those interested, I wound up getting a postal scale that has a capacity of 50lbs.  The bigger the turkeys got the less compliant they were with the weigh-ins I requested of them.  It became a 2 person job, and I eventually gave up on getting live weights, partly because I worried it would lead to injury (them or me) and also it was stressing them.  No issues though getting weights after processing!

Especially as they get over 15lbs or so live weight it seems that some kind of livestock scale that might be used for, say, sheep might be a better plan.  Just herd them over to that and get them to walk over it.  Precision won't be as good (instead of +-0.2oz I'd think a livestock scale might be good to +-0.2lbs, but that's not a big deal), but getting them to hold still on that scale linked to above made a valid weight challenging anyway.  This one looks like it might be worth trying out, especially if I get my sheep flock going like I want to.