perrypope

ill start by stating that i have got a 6 acre pond that has not ben fished for ten years the average bass so far six to seven pounds . iv only ben fishing it in the mornings for about two hours five days a week everything is thrown back .this is what im needen to no.is there away to atach some kind of tag or number that way i could record lenght weight and date .allso can i hurt my pond by keeping all the blue gill.............................................................thanks for any help .............and i hope i posted this in the write place