Malak, In your case, I think a better solution would be go after the tadpoles. Bullfrog tadpoles are pretty easy to spot, They are about 3-4" long compared to most other tadpoles they are about double or triple the size of most other frogs when they are tadpoles. The reason I'm saying this might be better is, If they raise up and form right there in your pond they are far more likely to stay around. Adult Bullfrogs can leap 3-4' a jump no problem, Wild frogs may or may not stay around, That's a lot of effort your making that may or may not get one to stick around. If they start there young and grow up at your pond you have a lot better chance of them sticking around. bullfrog tadpoles also have another intresting fact, They stay tadpoles for two seasons before turning into frogs. So you want one that will develpoe this year right? Look for tadpoles with back legs, No legs is a first year tadpole, the ones with small back legs is a two year old and will develope this year into a frog.
Catching adult bullfrogs is far easier with two people, One holds the light the other does the catching. shining the light from straight in front freezes them for a few seconds. Reach and grab fast and with a very firm grip, Or have a large net rerady to stick out in front of the frog as soon as the person shines the light, stick the net out in front of the frog and startle it from behind, a small stick lightly poked in the butt and it will jump straight forward, getting it in the net is the easy part, keeping it in the net and getting it in something you can get it home in is the hard part. Good luck, BTW, the ones I have that stick around and aren't as afraid of me are the ones that turned into frogs in my pond.
