I bought a stream thermometer:

[GetANet]

I have one that I got in a pet store, I primarily use it in the spring time late feb/march to check temp for bass fishing and have one on the fish finder. Def think it's a valuable thing to have in the arsenal.....

[surfrod]

Andy... about time

[Fishon1982]

Great investment I believe that know the water temp and wind are the most important thing about I have the fish hawk td for when I trout fish so I can know where to start trolling