Disable collision detection:
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 22473,0
POKE 22783,0
POKE 22953,169
POKE 22954,1
SYS 20632 
Unlimited lives:
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 22955,234
SYS 20632 
Unlimited lives (alternate):
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 2631,173
POKE 2632,141
POKE 2633,169
POKE 2634,89
SYS 20632