GA PLT ON VFR FLT PLAN FINDS HIMSELF IN DETERIORATING WX SO CLBS IN CLASS G AIRSPACE TO RECEIVE AN IFR CLRNC. THERE WAS CONFUSION OVER RTE OF THE NEW CLRNC AND DEST AS WELL AS THE PLT'S INST CAPABILITY. ALL THIS OCCURRED IN ALASKA.

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AFTER ARRIVING IN A VFR FLT PLAN TO SEWARD AND STAYING THERE 30 MINS; I STARTED TO FLY BACK TO MERRILL FIELD (RTE: SEWARD; FOLLOW THE HWY; NBOUND AND BACK TO MERRILL FIELD). EVEN THAT THE CEILINGS WERE AT 3200 FT MSL AND VISIBILITY 9 SM AT SEWARD; THE CEILINGS IN THE MOUNTAINS DROPPED; WHICH WOULD HAVE PREVENTED VFR FLT BACK TO MRI. I DETERMINED IT WAS BETTER TO FLY S ALONG THE COAST TO HOM-ANC AND TO MRI IN VFR CONDITIONS. LATER I CHANGED IT TO AN IFR FLT PLAN. CONTRIBUTING FACTORS: BTWN SEWARD AND HOMER THERE ARE MORE THAN 200 NM OF COAST LINE WITHOUT WX RPT STATIONS. SEWARD HAS AN ASOS; BUT THERE IS NO WX STATIONS FORECAST BEYOND 100 NM TOWARDS THE E AND S. THE CLOSEST IS SOLDOTNA 60 NM IN STRAIGHT LINE TO THE NW. AFTER WE WERE ABOUT 30-40 NM SW OF SEWARD; RADIO CONTACT WITH FSS WAS IMPOSSIBLE BELOW 3000 FT. NAVAIDS ARE NOT AVAILABLE IN THAT AREA BELOW 2000-3000 FT. HOW IT WAS DISCOVERED/CORRECTIVE ACTIONS: WHILE FLYING IN CLASS G AIRSPACE; VISIBILITY KEPT DROPPING; SO I DETERMINED IT WAS BETTER TO TURN S TO AVOID MOUNTAINS IN THE N; CLB AND FILE IFR WITH FSS IN CLASS G AIRSPACE; WHICH IN THE AREA GOES UP TO 8000 FT MSL. I CONTACTED ZAN AND I WAS INSTRUCTED TO CLB TO 8000 FT AND FLY TO HOMER VOR. MISCOM WITH THE CTLR OCCURRED. UPON RECEIVING THE CLRNC ZAN BELIEVED I WANTED TO EXECUTE AN INST APCH AT HOM WHEN ACTUALLY I WANTED TO FLY TO HOMER VORTAC; ZAN VOR AND MRI. IN TURN; CTR ASKED ME TWICE IF I WAS AN INST RATED PLT (WHICH I AM AND CURRENT). CORRECTIVE ACTIONS: MORE WX RPT STATIONS ARE NEEDED IN THIS AREA. AT LEAST TERMINAL AERODROME FORECAST SHOULD BE AVAILABLE FOR SEWARD. MORE NAVAIDS; RADAR AND RADIO COVERAGE ARE NEEDED IN THIS AREA. HUMAN PERFORMANCE CONSIDERATIONS: PERFORMANCE WAS AFFECTED BECAUSE I CHANGED MY VFR FLT PLAN TO IFR.