Plastic beads are a cheap and a affective way to catch spawning run trout in much the same way as with globugs. There are several ways to attach them. In the States and especially in Alaska a popular method is to fix the bead to the tippet with a tooth pick or a double loop some distance above a bare hook. It works when the fish takes the bead but on the strike the bead is pulled out. The mono slides through the teeth, which causes the following hook to set into the outside of the fish's mouth. This method is called flossing and according to our regulations could be regarded as foul hooking.
The method or attachment that at few of us have developed is to melt the bead onto the hook. It is quick and easy and does not require the considerable skills to tie a decent globug.
I prefer to use a short shanked, open gape hook such as the BMagic caddis or M series hook.
1. Put hook in vice in such a way that only the shank protrudes.
2. Heat hook with cigi lighter.
3. When sufficiently hot immediately press bead onto shank and hold it until plastic hardens.
The idea of burying most of the hook in the vice is to stop the heat weakening the hook at the bend as the metal vice absorbs any excessive heat.
The cheapest way to obtain beads is to look for suitable coloured plastic necklesses in the various junk shops.