Just found a really good site with information on stretching techniques for bouldering. Here are the illustrations for the recommended moves…
At the moment, i’m not doing enough stretching, before or after bouldering. It can take a few days to recover sometimes and this is likely down to poor stretching technique. A bit more time on this should help a lot.
There’s also a lot of good information in there about finger strength. It does suggest 3-5 years for fingers to become reliably stronger, given it is not just the muscles, but the tendons which need to grow. The tendon is the main part of the finger and this apparently needs longer. So, no miracle cures for not being able to do that impossible French traverse!