Both the Trappy and the Trappy XL traps have funnels that separate from the trap. (The Jumbo and the Jackpot traps don't.) Once in a while it happens that a funnel gets lost. It doesn't happen often thanks to the fact that the plastic funnels are buoyant and float in water. Sometimes, though, if a funnel gets lost in a swift stream, it may take off down the river before the user knows it.
It is hard to believe you can lose a funnel in a lake, but then, of course, there are also thieves we have to consider...
MAKE YOUR OWN CRAYFISH TRAP
But here is another good reason for using some extra Trappy funnels. You can use them to make your own home made crayfish trap.
A. Make a Trappy home made trap
To make your own crayfish trap using a Trappy replacement funnel is really easy. Visit your local ACE or Home Depot store and get a roll of 1/2" square mesh hardware cloth. I prefer the vinyl clad mesh, but it also comes in plain hardware cloth for a little less money. The vinyl covered cloth provides better protection from moisture and is kinder on your hands when you work with it.
A standard roll of hardware cloth can be cut into four pieces that will make four traps. Each piece can then be shaped into a cylinder, about 17" long and 9 1/2" wide.
The Trappy funnel fits nicely into the 1/2" mesh around the cylinder with no modifications, and you can arrange it so that the funnel is firmly attached.
B. Make a Trappy XL Jumbo home made trap
With the XL funnel replacement you can even make a most productive trap with a size that is legal in most states. I am talking about what I call the JUMBO trap.
The XL trap has only one movable funnel which is 11 1/2" across (see picture). With a hardware cloth cylinder of the same diameter, you can produce a crayfish trap like the Jumbo trap I used to manufacture and sell and which is almost identical in size to the Bullard Commercial trap. This size trap has the surprising ability to lure large amounts of crayfish to enter it. Last summer I surprised myself by pulling up 80 large crayfish (8-10 to the pound) after an all night soaking in a very well populated lake.