need tips for maintaining speed

Hi - was out in the fat boy flyer yesterday, was perfect conditions, only problem i was finding was that after i caught the wave i was running out of speed & unable to carry on along the wave which was really frustrating me.
My surf buddy was suggesting afterwards that i should try to grab the rail to initiate the turn as soon as i catch the wave, this is something i'll try later on today.
Does anyone else have any tips for what i could do to help myself, should i maybe be leaning forward a bit more when catching the wave perhaps? I know that everyone must go thru this frustrating point when learning / trying to improve.
Thanks
My surf buddy was suggesting afterwards that i should try to grab the rail to initiate the turn as soon as i catch the wave, this is something i'll try later on today.
Does anyone else have any tips for what i could do to help myself, should i maybe be leaning forward a bit more when catching the wave perhaps? I know that everyone must go thru this frustrating point when learning / trying to improve.
Thanks