Bill,
If you like 'playing' with antennas, why not try it? I
doubt if you'll see any great difference in performance from
a 'normal' dipole, and matching the '300' ohm feed line will
be 'fun', but certainly 'do-able'.
The usual 300 ohm twin lead that you find has certain
problems when used for an antenna for the lower frequencies.
Mechanical problems, as in strength (which has already been
mentioned). Not really ~that~ big'a problem, but one you should
be aware of. Twisting the line won't cause any problems and may
relieve one, 'flopping' around in wind (also pointed out). Ever
seen one of the twisted 'streamers' used in advertising tear
it's
self apart? Well, very often, anyway?
Using a tuner (I know Cecil, but for me it's easier) to feed
the folded dipole will make things 'more sinple'
'Doc