Not having a lot of space for wire antennas (50 feet at best) would it
be better for me to use an endfed zepp (50 feet) or a double zepp (25
feet each leg) ?

On the endfed zepp there is one side of the latter line that its not
connected to the aerial, on the other end (in the shack) where does
that end connect to...ground or should it be connected just like any
other latter line on the tuner ?

Just trying to get the best results out of a small space.

Thanks

Gil