if (rand(1,10) == 7){ 10%
TO
if (rand(1,10) >= 6){ 40%
if (rand(1,10) == 1) { 10%
dispbottom "[Fishing] Kraken drags your feet!!!";
if (rand(1,10) >= 5) { 50%
dispbottom "[Fishing] Kraken drags your feet!!!";
Well if you apply basic math to it you can just simply increase it or reduce it.