Il show u another knot for joining mono , can do it with your eyes shut ..... iv pulled plenty fish over the 100kg mark and It's never let go ....

 unfortunately can't make the comp.  hope there is another one son. 

when joining mono. The problem is though that any knot which passes through the guides at high speed (surf casting) will be a pain in the butt. I use braid now and have discovered some nice Chinese tension knots but they are difficult and time consuming. With mono gear I prefer to take the main line right to the terminal tackle to avoid the hassles of trying to pass the knot through the guides. Having said all of that though fishing from a boat is a completely different ball game.

always served me well joining the mono shock leader to the mono main line during my surfcasting days.  Maybe a bit old school these days?

I mainly fish from a boat using braid, which may not be what you are after.  I use to tie a bimini loop in the braid to join the leader onto but it was a lot of hassle. I've started using a polamar knot on the main line straighton to a swivel clip.  This then takes whatever terminal tackle i want to use on the day.  Quich and easy to tie and quick ti change rigs if i lose all or part of the terminal tackle.

 thanks guys. I normally ue braid nd attach mono leader via a bimini and uni, lbright or GT knot. but am wanting o go back to good old mono mainline for lanbased sharks. 

could try here...

http://www.marinews.com/knots/

or this...."Mono to wire knot for shark rig leader"

http://www.youtube.com/watch?v=M0BnCKfvqRY

A full blood knot is good for mono to mono when diameters are about the same: http://www.animatedknots.com/bloodknot/index.php

The albright is good for mono to mono when the diameters are very different as in your case: http://www.animatedknots.com/albright/index.php 

Both knots are quick & easy to tie, both pass through the guides pretty well & both retain excellent knot strength when tied correctly.

But nothing blood wise challenges the Uni-Uni. But as mentioned a PITA to cast as it does stick to the guides. From a boat not a worry in the world, and mono to mono its is as strong as any knot, because it self tensions both ways, and doesnt slip.

Neels

Tough one Pembo - take it its your surf rod? - recommendation: buy a rod with bigger eyes?!

The smallest knot I guess, 30lb - 50/b or 60lb leader IMO would be the centauri to centauri - or simply double fig 8 to double fig 8. Small and strong. (BUt seriously, in the long run, if you are going to use big line - change your rod.)

Yep. Its for the surf rod.

Thanks John. I might take your advice and get a rod with larger guides. For now I am going to use a nasty cheap old rod I have which does have reasonably large guides. It is heavy so will handle larger fish/small sharks. Might try the centauri. I find the albright or uni work fine for up to 40lb, But I'm probably going to use much heavier line.

I was down in Dunsborough last weekend & I was busted off by what I think was a small-medium shark. I only had light line but it was great fun (briefly). So now I want to have a go and be more prepared.

Ragbag is going to e-mail me a diagram of a knot he uses. Will also give that a go.

Ive always used this (mainly UK surf casting) and never had any problems at all.

http://www.google.com.au/imgres?q=shock+leader+knot&hl=en&sa=X&rls=com.microsoft:en-au:IE-SearchBox&biw=1680&bih=882&tbm=isch&prmd=imvnsfd&tbnid=InU34lKDURQXAM:&imgrefurl=http://www.silflayhraka.com/wp/2003/09/30/shock-leader-knot/&docid=ilvi9MoRWTj6hM&imgurl=http://www.unc.edu/~sstaff/images/knot.jpg&w=379&h=217&ei=T9ecTtmyK6yfmQXZhemuCQ&zoom=1&iact=rc&dur=812&sig=114977313283749177963&page=1&tbnh=137&tbnw=240&start=0&ndsp=32&ved=1t:429,r:0,s:0&tx=170&ty=91

go the albright. well the improved albright so you don't have a knot slipping on you under heavy tension, otherwise uni/uni joined together.

 uni to uni for mono to mono has never failed for me