Needing DIY Bilge Pump for kayak tips

[Rhino68W]

I am thinking of adding some type of small water pump for a small bilge pump on my hybrid canoe/kayak for when it is raining. Obviously it wouldn't keep up if I turtled, but a rain shouldn't overwhelm it. I just want to be able to fish in the rain and not have to stop for a while to manually pump water out of the kayak like I do now. 

Any ideas from you guys would be greatly appreciated! 

[HeavyDluxe]

I use a carwash sponge.  

 

The other option would be a small, battery-powered pump like people use to fill kerosene heaters:

http://www.walmart.com/ip/Kerosene-Pump-Battery-Operated/21804883?wmlspartner=wlpa&selectedSellerId=335&adid=22222222227025397276&wl0=&wl1=g&wl2=c&wl3=44121665432&wl4=pla-84663321632&wl5=1021873&wl6=&wl7=&wl8=&wl9=pla&wl10=111830463&wl11=online&wl12=21804883&wl13=&veh=sem

[Rhino68W]

26 minutes ago, HeavyDluxe said:

I use a carwash sponge.  

 

The other option would be a small, battery-powered pump like people use to fill kerosene heaters:

http://www.walmart.com/ip/Kerosene-Pump-Battery-Operated/21804883?wmlspartner=wlpa&selectedSellerId=335&adid=22222222227025397276&wl0=&wl1=g&wl2=c&wl3=44121665432&wl4=pla-84663321632&wl5=1021873&wl6=&wl7=&wl8=&wl9=pla&wl10=111830463&wl11=online&wl12=21804883&wl13=&veh=sem

That is what I used to use. But in my open style kayak water collects to the rear because that's there the weight is focuses. I want to put an inlet hose at the very back since that's where the smallest amount of water collects. 

Just for reference I have an Ascend H12 Kayak. It CAN sink.