Correct raise size here

[Rod]

It is obviously Zoom micro stakes and only 12 hand on opponent so nothing to really go on. In this type of spot what is a good raise size?

PokerStars Zoom Hand #110090150408:  Hold'em No Limit ($0.10/$0.25) - 2014/01/13 21:39:21 WET [2014/01/13 16:39:21 ET]
Table 'Whirlpool' 9-max Seat #1 is the button
Seat 1: Dog_Vintage ($29.91 in chips)
Seat 2: Bangenzo ($26.44 in chips)
Seat 3: The_Phenom76 ($33.27 in chips)
Seat 4: techhouse901 ($25 in chips)
Seat 5: Hixxy933 ($27.39 in chips)
Seat 6: PitbulBrisco ($46.33 in chips)
Seat 7: Magellan1301 ($27.90 in chips)
Seat 8: 33teetwo33 ($32.79 in chips)
Seat 9: krabice ($46.87 in chips)
Bangenzo: posts small blind $0.10
The_Phenom76: posts big blind $0.25
*** HOLE CARDS ***
Dealt to 33teetwo33 [ ]
techhouse901: folds
Hixxy933: folds
PitbulBrisco: folds
Magellan1301: folds
33teetwo33: raises $0.50 to $0.75
krabice: folds
Dog_Vintage: folds
Bangenzo: calls $0.65
The_Phenom76: folds
*** FLOP *** [As Ah]
Bangenzo: checks
33teetwo33: checks
*** TURN *** [As Ah] []
Bangenzo: checks
33teetwo33: bets $1
Bangenzo: calls $1
*** RIVER *** [As Ah ] []
Bangenzo: bets $1.75
33teetwo33:

[shipitgood]

Definatly bet the flop.

The turn bet more about 1.25

River; doesn't say whats in the pot about a fiver?

As played with the donk bet id bet big, like 6.50-7

[shipitgood]

If the pots £1.75 pre flop, on the flop bet about £1.25-30, he folds we win the pot nh, if he raises we can easily fold, is he calls we have position.

If he did call, pots about £4.35, on the turn bet about £3.70, if he calls, pots about £12, just jam the river.