Dive faster
Note: This cheat involves changing a game file make a backup copy of the file before going on. Then use a text editor to edit the "easy-cfg.xml", "normal-cfg.xml", or "expert-cfg.xml" file in the "data" directory of the game folder. Now scroll down to the "Default" section and find this text:

( <!-- WordShark 1.0 -->
<!-- Difficulty Level: Easy -->

<Config>
     <!-- Default Settings -->
     <Default>
          <DiverSpeed> 0.300000 </DiverSpeed>
          <KnockBack> 5 </KnockBack>
          <MaxCol> 7 </MaxCol>
          <MinCol> 5 </MinCol>
          <MaxEndDiff> 7 </MaxEndDiff>
          <MinEndDiff> 3 </MinEndDiff>
          <LetterDelay> 2000 </LetterDelay>
          <OceanDepth> 300 </OceanDepth>
          <TreasureSecs> 30 </TreasureSecs>
          <MapDelay> 250 </MapDelay>
     </Default>

Then change the "<DiverSpeed> 0.300000 </DiverSpeed>" entry to "<DiverSpeed> 9 </DiverSpeed>" You will now be able to go faster than before. You can also change other things, like Ocean Depth, Treasure Secs, and more.