SH3 puts the saves in your "my documents", you can move that, I've put it on my H: partition for example, works fine
another benefit of wolfpack assistance apart from damaging escorts, which also makes them easier to spot at night or in fog, is the fact that trailing AI uboats sometimes draw off 1 or 2 escorts, you get those reported with the convoy sometimes but trailing by about 20km or so, I once found a convoy like that that only had an auxiliary cruiser to protect it after being wolfpacked, so I took that out first and then had a jolly old time using up all my Deckgun and Flak ammo, only left the Neutrals and 1 silly passenger/cargo afloat, happy times