"Believe it or not this deck was built around a Entei at first.
Sorta weird huh. I don't like to use trainers, but they help
to have. The name Virtual High Tide™ comes from the
Porygon, the Clefairy evo lines (Moon Pokés), and the water
types. So what do you think?"

Well, Trainers are good, so you really should get used to playing them more often if you want to win games consistantly.  Here's the decklist:

20 Energy
13 Water Energy
7 Lightning Energy

31 Pokémon
2 Erika's Clefairy (Lv. 16 - Gym Challenge) 796
1 Erika's Clefairy (Lv. 17 - Gym Heroes)
2 Erika's Clefable
1 Eevee (Promo #11)
1 Eevee (Team Rocket)
2 Eevee (Neo Discovery)
1 Dark Vaporeon
1 Dark Jolteon
3 Chinchou
2 Lanturn
3 Wooper (Neo Genesis)
3 Blaine's Kangaskhan
4 Sabrina's Porygon
2 Porygon (Team Rocket)
1 Magby
1 Elekid
1 Cleffa (Promo #35)

9 Trainers
1 Misty's Duel
1 Sabrina's Gaze
3 Moo-Moo Milk
1 Bill's Teleporter
2 Erika's Kindness
1 Resistance Gym Stadium Card

Your deck has the following fundamental problems:

• far too many Pokémon
• too many evolution lines
• not enough BBPs (Big Basic Pokémon)
• Trainers are not reliable (coin flips, single copies, etc.)

Based on what you said up top, I'll focus on Clefables, Porygons, and some Water Pokémon.  Go with three Clefairy (Genesis) and two Clefable, that pair of TR Porygon, two Cool Porygon, (Promo #15,) four Seel, and three Dewgong. Keep the Wooper in as well, and take out all the other Pokémon.

Retool your Energy to have four Double Colorless Energy, three Full Heal Energy, two Recycle Energy, and six Water Energy.

Drop all of those Trainers, I'm sorry.  I'm giving you 26 Trainers, so you'll have to learn to use them!  =P  Have three Professor Oaks, three Computer Searches, and three Master Ball to get what you need.  Four Berry and two Gold Berry will keep your monsters from passing out.  Four Energy Removal and three Gust of Wind serve as offensive Trainers.  Two Nightly Garbage Run retrieve some cards back and two No Removal Gym hinder opponents from taking away all your Colorless Energies.

Here's how your more-viable deck looks now:

15 Energy
6 Water Energy
4 Double Colorless Energy
3 Full Heal Energy Special Energy Card
2 Recycle Energy Special Energy Card

19 Pokémon
3 Clefairy (Neo Genesis)
2 Clefable
4 Seel
3 Dewgong
3 Wooper (Neo Genesis)
2 Porygon (Team Rocket)
2 Cool Porygon

26 Trainers
3 Professor Oak
3 Master Ball
3 Computer Search
4 Berry Pokémon Tool
2 Gold Berry Pokémon Tool
4 Energy Removal
3 Gust of Wind
2 Nightly Garbage Run (Rocket's Secret Machine)
2 No Removal Gym Stadium Card

Good luck, PokeJosh!

     -Dugtrio