THE PLT RPTD THAT HE MADE A NON-STD RT-HAND DEPARTURE AFTER T/O FROM RWY 29, TO AVOID TRAFFIC DEPARTING TO THE LEFT. THE ACFT BEGAN TO SINK AS HE ATTEMPTED TO CLIMB OVER THE LEE SIDE OF A 200 FT-HIGH RIDGE LESS THAN 1 MILE NORTHWEST OF THE ARPT. THE ACFT SUBSEQUENTLY IMPACTED TREES AND A UTILITY POLE, AND FELL TO THE GROUND. THE ENGINE WAS DEVELOPING 'GOOD' PWR AT THE TIME. WITNESSES RPTD THAT THE ACFT USED UP MOST OF THE 5,440 FT RWY DURING T/O, AND THAT THE CLIMB RATE WAS POOR. THE ACFT FLAPS WERE OBSERVED TO BE EXTENDED DURING TAKEOFF. POST-CRASH EXAM OF THE ACFT REVEALED THAT THE FLAPS WERE EXTENDED 30 DEGREES AT THE TIME OF THE ACCIDENT. THE ACFT WAS ESTIMATED TO WEIGH ABOUT 100 POUNDS BELOW GROSS WT AT T/O. THE DENSITY ALTITUDE AT THE ARPT WAS ESTIMATED TO BE 1,900 FT. THE ARPT WIND WAS ESTIMATED BY A WITNESS TO BE FROM 290 DEGREES AT 10-15 KTS AT THE TIME. A NEARBY RPTNG STATION (LUK) 16 NM AWAY RPTD WINDS FROM 260 DEGREES AT 10 KNOTS GUSTING TO 18 KTS.