2. No VNAV on me bird and no FMS either. VS mode only
3. Couldn't care less, If I'm hand flying and ATC suddenly gives up vectoring and offers short visual approach, props forward, gear down and half flaps will see us happily following 10° glideslope.
When I'm told track miles to touchdown I just multiply my current height AAL with 3 to check position relative to 3° glide and adjust VS accordingly.