.02
The best baskets on the market are heavy!!! Try picking up a Mach3 or 5 :b(like at Riverside and Stielly, right?

)and then do the same with a temp/portable like the M-14 or the DB-5. Much lighter. Especially the M-14. One of the reasons the permanent baskets cost so much is the materials are sold by weight. Building a basket isn't hard for a metal shop, but buying the bar stock and chains is a significant expense.
I have been screwing around with my old M-14 for a while now in the Lab.
The M-14 come with a single ring of chains.
1. Removed stock chains.
2. Replaced stock chains with thicker gauge chains (I didn't bust out the calipers but I tried to match the new chains to what's on the Mach3s at North Park).
2. Added inner chains. Inner chains are almost twice as heavy as outer chains. I putt harder than I should so I gave the basket some more mass dampening at the pole. I also set the lengths so the bottom ring of the outer chains are above the ring for the inner chains (have both sets of chains on the same ring makes no sense to me) so the sweet spot for the outer ring is wider as the chains can slide up and grab that waaay too far to the right/left putt still has a chance to grab metal but if the disc gets to the inner ring of chains, the inner ring on the inside chains slides up and picks up the weight of the outer chains as well to help slow the disc.
3. Add third set of chains that are attached to the same rings as the outer chains but run at 45 degrees to the pole. This set of chains is an attempt to a. close the hole between the two chain sets where they run parallel closer to the top of the basket (works pretty good but sometimes redirects the disc right the *&%^ out of the basket) and b. to force the disc into to go "nose down" if I hit the chains high. I've had and seen many seemingly perfect putts hit just a little high and flat/nose up suffer needless (and heartbreaking!!) rejection.
Now looking at Cubby's disc trap (I swear I've gone crabbing with that thing when I was a kid!!) maybe there something to an outer ring of chains that somehow mimic the trap aspect of Cubby's trap. I guess I want a basket that works like a roach "motel" trap (discs check in, they don't check out!!!). But just having a row of loose chains hanging seems weird.
Maybe adding some metal bars into one of the rows of chains would add some trapping rigidity w/o impeding the catching area.
The best baskets are just that: THE BEST BASKETS!!! But there is nothing in the PDGA specs about chains or entrapment elements so why not figure out if there is a way to make the Best Baskets Better.
If anyone else has done any experimenting, I would love to hear/see what you've done. I'll try and get some pics up of my modded basket.
My mods are designed to be additive to existing baskets. Converting a POS basket over to something better is not cheap- but it's cheaper than buying a new basket.
Cheers,
Bro