You said:
"Are the dagger boards & trunks strong enough for someone to stand on the end of the board to help raise the boat?"
AAAAAAH! (Sorry about that.) Bet that sucka JUMPED on the board, not STOOD on the board. Or it was gonna fail anyway...
It's a surprisingly widely held misconception that people can't stand on the daggerboards to right a boat.
Oh, kaaaay..... Give this some thought:
How much force do you think is exerted by the sail and the forward motion of the boat through the water? Try this experiment: Sail upwind, doesn't have to be in a blow. Sheet hard, go well. Then, go and just try to pull your board up while underway. If you can pull it up, well, you're the Hulk and we damn sure don't need to be having this conversation. Or, you ain't sailin' the boat right.
Bottom line, this: There's a buttload more force than 200-odd lbs on that board, I promise. Go ahead and stand on it.
Now, that said, DO NOT think you can JUMP on or DIVE off the daggerboard, but just standing on it for leverage is ok.
At 205, you're plenty to raise that boat. But it's techniqu-ish. Didja stand opposite the mast, slightly behind (like at the 'board)? Didja UNCLEAT THE SAILS? Didja point the mast toward the wind? Didja hang in the water? Don't hang in the water; whatever's hanging in the water isn't leveraging the boat...
I can right my 18sq (11' beam, 31' stick) at 5'4" and less weight than you (it's a feminine thing, I ain't gonna give my weight ;-) with my homemade righting pole, you sure oughta be able to right your 5.2 at your size...
Have confidence! it'll make your sailing a lot more fun, been there done that. Practice flipping...
Sea ya
tami