sorry for my tardy replies, I have not had access recently.
Thanks for all the advice above, I have decided to do a course with Sous Vide Tools next week, so hopefully will get some hands on tips from it.
I have started to tone down the vac timing as some things (scallops) were getting squished!
I will definitely try the ice trick.
A question over cost was asked, I bought it from a company is Essex through eBay, they brought it over from China but never used it.
Thanks again,
Karl