[Digger]

I did it myself, but I'm still putting finishing touches on the thing. I have found a perfect canister. 4" diameter, with o-rings, and you can make it any length you like with a length of soil pipe. All you need to complete it is araldite.

I don't know what batteries you've got there, but I'd say this canister is ideal for most uses, as well as the fact that at this size you can use buddy pony bands or 5.5" twinning bands to attatch it to your cylinder.

I'll send you my report of the project so far if you like, but I warn you that it's not finished. I'm getting around to it, and just need a few more photos, and somewhere to post the thing.

I don't knwo much about switches etc. so I opted for the Maplins waterproof option. I went for a small one, but I've seen these really hefty ones that look like you could easily use them with drygloves on. I go for wets, so I've got a more sensible size switch.

I would also suggest that if you've got a really new idea on what to use or how to use it, post it on the forum and I'm sure if anyone's tried and failed they'll let you know. I spent about £20 I didn't need to.

Mind you, the whole lot cost me £76 so far, and it's due it's first sea trial in Stoney on Saturday. If anyone's there on Saturday and wants to ask a load of questions, please come up and ask. I don't bite (unless you want me to), and I want other people to try this, too.