Thanks @ukzero1 . New to braid and I've found it tricky to get knots to fully stick. I've gone for a 15 turn uni knot with double loop through the eye and loop back through the loop made by the loop! I've left a decent tag end in case of slippage too but hidden it all with an anti tangle sleeve. I do think I might have over engineered a little!
I do a fair bit of distance casting with beach rod and multiplier and usually 5oz of lead. I mainly use a braid leader, as I find it helps to get the rod bending, and all I ever use for the connections are, a double uni for the mono to braid, and a tucked half blood doubled up. Not once have I had any problems with the braid slipping.
Palomar knot for lure traces, easy to pass the whole trace back through the loop to finish the knot, it's really strong, managed to straighten out a size 4 treble on one of my lures that ended up in a tree
For deadbait traces where i didn't fancy trying to pass the treble hooks through the loop of a palomar i use a simple 5 turn grinner/uni knot, have straightened size 6-8 trebles when pulling out of snags with this knot. (this is obsolete now because i've started building all my traces with quick change swivels which pass easily through a palomar loop)
So there you have 2 really strong knots, doubt you'll need any more than those 2 for predator/lure fishing.