There are still a bunch of "portable" fish finders on the market. I use an Eagle portable GPS fish finder all the time. Good little unit.Here is a link to the potables for sale at Cabelashttp://www.cabelas.com/cabelas/en/templates/pod/horizontal-pod.jsp?_DARGS=/cabelas/en/common/catalog/pod-link.jsp_A&_DAV=MainCatcat602025-cat601356&rid=&indexId=cat601356&navAction=push&masterpathid=&navCount=1&parentType=index&parentId=cat601356&id=0076022
Lotta ins, lotta outs, lotta what have-yous